diff --git a/gcn/circulars.example.json b/gcn/circulars.example.json
index 996e0487..5501671a 100644
--- a/gcn/circulars.example.json
+++ b/gcn/circulars.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/circulars.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/circulars.schema.json",
   "eventId": "GRB 230410A",
   "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
   "submittedHow": "email-legacy",
diff --git a/gcn/circulars.schema.json b/gcn/circulars.schema.json
index a423613a..90fd319f 100644
--- a/gcn/circulars.schema.json
+++ b/gcn/circulars.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/circulars.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/circulars.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "GCN Circular",
diff --git a/gcn/notices/burstcube/alert.example.json b/gcn/notices/burstcube/alert.example.json
index 150263bf..85acdc77 100644
--- a/gcn/notices/burstcube/alert.example.json
+++ b/gcn/notices/burstcube/alert.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/burstcube/alert.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/burstcube/alert.schema.json",
   "alert_datetime": "2024-06-01T00:05:00.00Z",
   "alert_tense": "current",
   "alert_type": "initial",
diff --git a/gcn/notices/burstcube/alert.schema.json b/gcn/notices/burstcube/alert.schema.json
index 59025f7f..ede64019 100644
--- a/gcn/notices/burstcube/alert.schema.json
+++ b/gcn/notices/burstcube/alert.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/burstcube/alert.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/burstcube/alert.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "title": "Alert",
   "description": "BurstCube Trigger Alert",
diff --git a/gcn/notices/burstcube/test.example.json b/gcn/notices/burstcube/test.example.json
index 6bc87584..d82a1031 100644
--- a/gcn/notices/burstcube/test.example.json
+++ b/gcn/notices/burstcube/test.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/burstcube/test.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/burstcube/test.schema.json",
   "alert_datetime": "2024-06-01T00:05:00.00Z",
   "alert_tense": "current",
   "alert_type": "initial",
diff --git a/gcn/notices/burstcube/test.schema.json b/gcn/notices/burstcube/test.schema.json
index 99f6da70..8b4fbd54 100644
--- a/gcn/notices/burstcube/test.schema.json
+++ b/gcn/notices/burstcube/test.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/burstcube/test.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/burstcube/test.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "title": "Alert",
   "description": "BurstCube Trigger Alert",
diff --git a/gcn/notices/core/AdditionalInfo.schema.json b/gcn/notices/core/AdditionalInfo.schema.json
index 1b63f7ac..9d97a14d 100644
--- a/gcn/notices/core/AdditionalInfo.schema.json
+++ b/gcn/notices/core/AdditionalInfo.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/AdditionalInfo.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/AdditionalInfo.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "Comments",
diff --git a/gcn/notices/core/Alert.schema.json b/gcn/notices/core/Alert.schema.json
index 77e41216..acd9b98a 100644
--- a/gcn/notices/core/Alert.schema.json
+++ b/gcn/notices/core/Alert.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/Alert.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/Alert.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "title": "Alert",
   "description": "Alert Information description properties of this notice",
diff --git a/gcn/notices/core/DateTime.schema.json b/gcn/notices/core/DateTime.schema.json
index 302219d9..d5236984 100644
--- a/gcn/notices/core/DateTime.schema.json
+++ b/gcn/notices/core/DateTime.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/DateTime.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/DateTime.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "title": "DateTime",
   "description": "Time descriptions of transient event and observation",
diff --git a/gcn/notices/core/DetectorStatus.schema.json b/gcn/notices/core/DetectorStatus.schema.json
index e4d42d64..17e4a4c2 100644
--- a/gcn/notices/core/DetectorStatus.schema.json
+++ b/gcn/notices/core/DetectorStatus.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/DetectorStatus.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/DetectorStatus.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "title": "DetectorStatus",
   "enum": ["on", "off", "triggered"],
diff --git a/gcn/notices/core/Distance.schema.json b/gcn/notices/core/Distance.schema.json
index 30e04241..ecf4c34f 100644
--- a/gcn/notices/core/Distance.schema.json
+++ b/gcn/notices/core/Distance.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/Distance.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/Distance.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "Distance",
diff --git a/gcn/notices/core/Duration.schema.json b/gcn/notices/core/Duration.schema.json
index ea3b3c82..89f01cf8 100644
--- a/gcn/notices/core/Duration.schema.json
+++ b/gcn/notices/core/Duration.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/Duration.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/Duration.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "Duration",
diff --git a/gcn/notices/core/Event.schema.json b/gcn/notices/core/Event.schema.json
index c2a1905f..82b04eff 100644
--- a/gcn/notices/core/Event.schema.json
+++ b/gcn/notices/core/Event.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/Event.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/Event.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "Event Information",
diff --git a/gcn/notices/core/FollowUp.schema.json b/gcn/notices/core/FollowUp.schema.json
index cc865327..773353de 100644
--- a/gcn/notices/core/FollowUp.schema.json
+++ b/gcn/notices/core/FollowUp.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/FollowUp.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/FollowUp.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "title": "FollowUp",
   "description": "Schema specific to follow-up cases",
diff --git a/gcn/notices/core/GeoLocBase.schema.json b/gcn/notices/core/GeoLocBase.schema.json
index 7d5ce5cd..cae4c06b 100755
--- a/gcn/notices/core/GeoLocBase.schema.json
+++ b/gcn/notices/core/GeoLocBase.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/GeoLocBase.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/GeoLocBase.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "title": "Spacecraft Geolocation and McIlwain L",
   "description": "Enables GCN providers to include spacecraft geolocation and McIlwain L-Parameter.",
diff --git a/gcn/notices/core/HardnessRatio.schema.json b/gcn/notices/core/HardnessRatio.schema.json
index 51213812..b1ad8799 100644
--- a/gcn/notices/core/HardnessRatio.schema.json
+++ b/gcn/notices/core/HardnessRatio.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/HardnessRatio.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/HardnessRatio.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "HardnessRatio",
diff --git a/gcn/notices/core/Localization.example.json b/gcn/notices/core/Localization.example.json
index aeb58caa..e18c3501 100644
--- a/gcn/notices/core/Localization.example.json
+++ b/gcn/notices/core/Localization.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/Localization.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/core/Localization.schema.json",
   "ra": 120,
   "dec": 45,
   "ra_dec_error": [0.5, 0.8, 0],
diff --git a/gcn/notices/core/Localization.schema.json b/gcn/notices/core/Localization.schema.json
index 2f632f25..d0812930 100644
--- a/gcn/notices/core/Localization.schema.json
+++ b/gcn/notices/core/Localization.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/Localization.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/Localization.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "Localization",
diff --git a/gcn/notices/core/Pointing.example.json b/gcn/notices/core/Pointing.example.json
index 355ccea1..fcdca98b 100644
--- a/gcn/notices/core/Pointing.example.json
+++ b/gcn/notices/core/Pointing.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/Pointing.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/core/Pointing.schema.json",
   "ra_pointing": 120.5,
   "dec_pointing": 30.2,
   "roll": -12.8,
diff --git a/gcn/notices/core/Pointing.schema.json b/gcn/notices/core/Pointing.schema.json
index 0de1af62..a4ef9a5d 100644
--- a/gcn/notices/core/Pointing.schema.json
+++ b/gcn/notices/core/Pointing.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/Pointing.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/Pointing.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "title": "Instrument Pointing",
   "description": "Instrument pointing and rotational rates.",
diff --git a/gcn/notices/core/Redshift.schema.json b/gcn/notices/core/Redshift.schema.json
index cc622271..86043641 100644
--- a/gcn/notices/core/Redshift.schema.json
+++ b/gcn/notices/core/Redshift.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/Redshift.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/Redshift.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "Redshift",
diff --git a/gcn/notices/core/Reporter.example.json b/gcn/notices/core/Reporter.example.json
index b2a750aa..79c8c7f5 100644
--- a/gcn/notices/core/Reporter.example.json
+++ b/gcn/notices/core/Reporter.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/Reporter.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/core/Reporter.schema.json",
   "mission": "Hubble Space Telescope",
   "instrument": "Advanced Camera for Surveys",
   "record_number": 1,
diff --git a/gcn/notices/core/Reporter.schema.json b/gcn/notices/core/Reporter.schema.json
index ee54b933..296cbbd8 100644
--- a/gcn/notices/core/Reporter.schema.json
+++ b/gcn/notices/core/Reporter.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/Reporter.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/Reporter.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "title": "Reporter",
   "description": "Alert Reporter instrument",
diff --git a/gcn/notices/core/Statistics.example.json b/gcn/notices/core/Statistics.example.json
index 9fda0cca..bc24befd 100644
--- a/gcn/notices/core/Statistics.example.json
+++ b/gcn/notices/core/Statistics.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/Statistics.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/core/Statistics.schema.json",
   "far": 0.001,
   "trigger_type": "rate",
   "net_count_rate": 2000,
diff --git a/gcn/notices/core/Statistics.schema.json b/gcn/notices/core/Statistics.schema.json
index 682dc88f..bd08e7e1 100644
--- a/gcn/notices/core/Statistics.schema.json
+++ b/gcn/notices/core/Statistics.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/Statistics.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/Statistics.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "Statistics",
diff --git a/gcn/notices/core/spectral/GammaRay.schema.json b/gcn/notices/core/spectral/GammaRay.schema.json
index 4e5c16ad..ad35f2ea 100644
--- a/gcn/notices/core/spectral/GammaRay.schema.json
+++ b/gcn/notices/core/spectral/GammaRay.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/spectral/GammaRay.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/spectral/GammaRay.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "spectral.GammaRay",
diff --git a/gcn/notices/core/spectral/models/Band.schema.json b/gcn/notices/core/spectral/models/Band.schema.json
index 0a4550e0..2c02d348 100644
--- a/gcn/notices/core/spectral/models/Band.schema.json
+++ b/gcn/notices/core/spectral/models/Band.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/spectral/models/Band.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/spectral/models/Band.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "Band",
diff --git a/gcn/notices/core/spectral/models/CutOffPowerLaw.schema.json b/gcn/notices/core/spectral/models/CutOffPowerLaw.schema.json
index b3e6c1ad..47f7865d 100644
--- a/gcn/notices/core/spectral/models/CutOffPowerLaw.schema.json
+++ b/gcn/notices/core/spectral/models/CutOffPowerLaw.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/spectral/models/CutOffPowerLaw.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/spectral/models/CutOffPowerLaw.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "CutOffPowerLaw",
diff --git a/gcn/notices/core/spectral/models/PowerLaw.schema.json b/gcn/notices/core/spectral/models/PowerLaw.schema.json
index cf58b707..aa21fbce 100644
--- a/gcn/notices/core/spectral/models/PowerLaw.schema.json
+++ b/gcn/notices/core/spectral/models/PowerLaw.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/spectral/models/PowerLaw.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/core/spectral/models/PowerLaw.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "PowerLaw",
diff --git a/gcn/notices/einstein_probe/wxt/alert.example.json b/gcn/notices/einstein_probe/wxt/alert.example.json
index bca591e6..41521199 100644
--- a/gcn/notices/einstein_probe/wxt/alert.example.json
+++ b/gcn/notices/einstein_probe/wxt/alert.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/einstein_probe/wxt/alert.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/einstein_probe/wxt/alert.schema.json",
   "instrument": "WXT",
   "trigger_time": "2024-03-01T21:46:05.13Z",
   "id": ["01708973486"],
diff --git a/gcn/notices/einstein_probe/wxt/alert.schema.json b/gcn/notices/einstein_probe/wxt/alert.schema.json
index 22cf664b..2e56574b 100644
--- a/gcn/notices/einstein_probe/wxt/alert.schema.json
+++ b/gcn/notices/einstein_probe/wxt/alert.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/einstein_probe/wxt/alert.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/einstein_probe/wxt/alert.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "title": "EP/WXT Alert",
   "description": "Candidate X-ray transient reported from the EP/WXT on board trigger",
diff --git a/gcn/notices/glowbug/Alert.example.json b/gcn/notices/glowbug/Alert.example.json
index a3271f7b..2f07c02e 100644
--- a/gcn/notices/glowbug/Alert.example.json
+++ b/gcn/notices/glowbug/Alert.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/glowbug/Alert.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/glowbug/Alert.schema.json",
   "mission": "GLOWBUG",
   "alert_datetime": "2023-04-23T15:25:55Z",
   "alert_tense": "current",
diff --git a/gcn/notices/glowbug/Alert.schema.json b/gcn/notices/glowbug/Alert.schema.json
index aa3deb1c..7a64d9da 100644
--- a/gcn/notices/glowbug/Alert.schema.json
+++ b/gcn/notices/glowbug/Alert.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/glowbug/Alert.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/glowbug/Alert.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "title": "Glowbug Alert Notice",
   "description": "Information about a Glowbug trigger.  All fields optional; omitted if not available or not applicable.",
diff --git a/gcn/notices/heasarc/archive_alert.example.json b/gcn/notices/heasarc/archive_alert.example.json
index 7e0cff00..e38f38cc 100644
--- a/gcn/notices/heasarc/archive_alert.example.json
+++ b/gcn/notices/heasarc/archive_alert.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/heasarc/archive_alert.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/heasarc/archive_alert.schema.json",
   "mission": "HEASARC",
   "alert_datetime": "2022-05-04T00:00:00Z",
   "alert_tense": "archival",
diff --git a/gcn/notices/heasarc/archive_alert.schema.json b/gcn/notices/heasarc/archive_alert.schema.json
index f3f8b956..1a835c2b 100644
--- a/gcn/notices/heasarc/archive_alert.schema.json
+++ b/gcn/notices/heasarc/archive_alert.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/heasarc/archive_alert.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/heasarc/archive_alert.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "HEASARC - Data in Archive",
diff --git a/gcn/notices/icecube/lvk_nu_track_search.example.json b/gcn/notices/icecube/lvk_nu_track_search.example.json
index d0a198ab..71d615fd 100644
--- a/gcn/notices/icecube/lvk_nu_track_search.example.json
+++ b/gcn/notices/icecube/lvk_nu_track_search.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/icecube/lvk_nu_track_search.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/icecube/lvk_nu_track_search.schema.json",
   "type": "IceCube LVK Alert Nu Track Search",
   "reference": { "gcn.notices.LVK.alert": "S230914ak-2-Preliminary" },
   "ref_ID": "S230914ak",
diff --git a/gcn/notices/icecube/lvk_nu_track_search.schema.json b/gcn/notices/icecube/lvk_nu_track_search.schema.json
index f0e677c0..843001db 100644
--- a/gcn/notices/icecube/lvk_nu_track_search.schema.json
+++ b/gcn/notices/icecube/lvk_nu_track_search.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/icecube/lvk_nu_track_search.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/icecube/lvk_nu_track_search.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "IceCube LVK Alert Nu Track Search",
diff --git a/gcn/notices/icecube/test/gold_bronze.update.example.json b/gcn/notices/icecube/test/gold_bronze.update.example.json
index 5622feb0..5a404d97 100644
--- a/gcn/notices/icecube/test/gold_bronze.update.example.json
+++ b/gcn/notices/icecube/test/gold_bronze.update.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/icecube/test/gold_bronze_track_alerts.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/icecube/test/gold_bronze_track_alerts.schema.json",
   "additional_info": "IceCube Bronze Neutrino Track Alert",
   "event_name": ["IceCube-230416A"],
   "id": ["137840", "57034692"],
diff --git a/gcn/notices/icecube/test/gold_bronze_track_alerts.example.json b/gcn/notices/icecube/test/gold_bronze_track_alerts.example.json
index 4212b08a..b5d97a40 100644
--- a/gcn/notices/icecube/test/gold_bronze_track_alerts.example.json
+++ b/gcn/notices/icecube/test/gold_bronze_track_alerts.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/icecube/test/gold_bronze_track_alerts.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/icecube/test/gold_bronze_track_alerts.schema.json",
   "additional_info": "IceCube Bronze Neutrino Track Alert",
   "id": ["137840", "57034692"],
   "alert_datetime": "2023-04-16T05:22:29.55Z",
diff --git a/gcn/notices/icecube/test/gold_bronze_track_alerts.schema.json b/gcn/notices/icecube/test/gold_bronze_track_alerts.schema.json
index 29f262bd..56520c9f 100644
--- a/gcn/notices/icecube/test/gold_bronze_track_alerts.schema.json
+++ b/gcn/notices/icecube/test/gold_bronze_track_alerts.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/icecube/test/gold_bronze_track_alerts.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/icecube/test/gold_bronze_track_alerts.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "title": "IceCubeGoldAndBronzeTracks",
diff --git a/gcn/notices/svom/eclairs/trigger.catalog.example.json b/gcn/notices/svom/eclairs/trigger.catalog.example.json
index c16f79a1..46352d82 100644
--- a/gcn/notices/svom/eclairs/trigger.catalog.example.json
+++ b/gcn/notices/svom/eclairs/trigger.catalog.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/svom/trigger.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/svom/trigger.schema.json",
   "instrument": "ECLAIRs",
   "alert_datetime": "2024-02-22T08:51:55",
   "alert_tense": "test",
diff --git a/gcn/notices/svom/eclairs/trigger.not-slewing.example.json b/gcn/notices/svom/eclairs/trigger.not-slewing.example.json
index ffcc11eb..d8a0eb86 100644
--- a/gcn/notices/svom/eclairs/trigger.not-slewing.example.json
+++ b/gcn/notices/svom/eclairs/trigger.not-slewing.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/svom/trigger.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/svom/trigger.schema.json",
   "instrument": "ECLAIRs",
   "alert_datetime": "2024-02-22T08:51:55",
   "alert_tense": "test",
diff --git a/gcn/notices/svom/eclairs/trigger.slewing.example.json b/gcn/notices/svom/eclairs/trigger.slewing.example.json
index b5116944..bb2e5ac5 100644
--- a/gcn/notices/svom/eclairs/trigger.slewing.example.json
+++ b/gcn/notices/svom/eclairs/trigger.slewing.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/svom/trigger.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/svom/trigger.schema.json",
   "instrument": "ECLAIRs",
   "alert_datetime": "2024-02-22T08:51:55",
   "alert_tense": "test",
diff --git a/gcn/notices/svom/eclairs/trigger.wakeup.example.json b/gcn/notices/svom/eclairs/trigger.wakeup.example.json
index ff53850b..60996bf7 100644
--- a/gcn/notices/svom/eclairs/trigger.wakeup.example.json
+++ b/gcn/notices/svom/eclairs/trigger.wakeup.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/svom/trigger.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/svom/trigger.schema.json",
   "instrument": "ECLAIRs",
   "alert_datetime": "2024-02-22T08:51:55",
   "alert_tense": "test",
diff --git a/gcn/notices/svom/grm/trigger.example.json b/gcn/notices/svom/grm/trigger.example.json
index 58a105df..c202db67 100644
--- a/gcn/notices/svom/grm/trigger.example.json
+++ b/gcn/notices/svom/grm/trigger.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/svom/trigger.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/svom/trigger.schema.json",
   "instrument": "GRM",
   "alert_datetime": "2024-02-22T08:51:55",
   "alert_tense": "test",
diff --git a/gcn/notices/svom/trigger.schema.json b/gcn/notices/svom/trigger.schema.json
index 6b072db0..c81faf33 100644
--- a/gcn/notices/svom/trigger.schema.json
+++ b/gcn/notices/svom/trigger.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/svom/trigger.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/svom/trigger.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "unevaluatedProperties": false,
diff --git a/gcn/notices/swift/bat/Guano.Retraction.example.json b/gcn/notices/swift/bat/Guano.Retraction.example.json
index 3db8c5f6..5f7ec5f2 100644
--- a/gcn/notices/swift/bat/Guano.Retraction.example.json
+++ b/gcn/notices/swift/bat/Guano.Retraction.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/swift/bat/Guano.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/swift/bat/Guano.schema.json",
   "mission": "Swift",
   "instrument": "BAT-GUANO",
   "messenger": "EM",
diff --git a/gcn/notices/swift/bat/Guano.example.json b/gcn/notices/swift/bat/Guano.example.json
index a0f2bee6..828e0e60 100644
--- a/gcn/notices/swift/bat/Guano.example.json
+++ b/gcn/notices/swift/bat/Guano.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/swift/bat/Guano.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/swift/bat/Guano.schema.json",
   "mission": "Swift",
   "instrument": "BAT-GUANO",
   "messenger": "EM",
diff --git a/gcn/notices/swift/bat/Guano.schema.json b/gcn/notices/swift/bat/Guano.schema.json
index 206af8b6..22ead2e9 100644
--- a/gcn/notices/swift/bat/Guano.schema.json
+++ b/gcn/notices/swift/bat/Guano.schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/swift/bat/Guano.schema.json",
+  "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/swift/bat/Guano.schema.json",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "title": "Swift/BAT-GUANO Alert",
   "description": "Candidate gamma-ray transient reported from the BAT-GUANO targeted search",
diff --git a/gcn/notices/swift/bat/guano.loc_arc_min.example.json b/gcn/notices/swift/bat/guano.loc_arc_min.example.json
index 48395f1f..523a7dea 100644
--- a/gcn/notices/swift/bat/guano.loc_arc_min.example.json
+++ b/gcn/notices/swift/bat/guano.loc_arc_min.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/swift/bat/Guano.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/swift/bat/Guano.schema.json",
   "mission": "Swift",
   "instrument": "BAT-GUANO",
   "messenger": "EM",
diff --git a/gcn/notices/swift/bat/guano.loc_map.example.json b/gcn/notices/swift/bat/guano.loc_map.example.json
index eac56452..2305e7b7 100644
--- a/gcn/notices/swift/bat/guano.loc_map.example.json
+++ b/gcn/notices/swift/bat/guano.loc_map.example.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/swift/bat/Guano.schema.json",
+  "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/swift/bat/Guano.schema.json",
   "mission": "Swift",
   "instrument": "BAT-GUANO",
   "messenger": "EM",