diff --git a/.github/workflows/graalpy-micronaut-guide.yml b/.github/workflows/graalpy-micronaut-guide.yml
index 36af5dd..f4706bf 100644
--- a/.github/workflows/graalpy-micronaut-guide.yml
+++ b/.github/workflows/graalpy-micronaut-guide.yml
@@ -34,7 +34,7 @@ jobs:
           ./mvnw --no-transfer-progress mn:run &
           mnpid="$!"
           sleep 30
-          curl -s -D - -o /dev/null http://localhost:8080/
+          curl --fail-with-body --silent --dump-header - -o /dev/null http://localhost:8080/
           kill $mnpid
       - name: Build and run native 'graalpy-micronaut-guide' using Maven
         run: |
@@ -43,5 +43,5 @@ jobs:
           ./target/graalpy-micronaut &
           mnpid="$!"
           sleep 20
-          curl -s -D - -o /dev/null http://localhost:8080/
+          curl --fail-with-body --silent --dump-header - -o /dev/null http://localhost:8080/
           kill $mnpid
diff --git a/.github/workflows/graalpy-micronaut-pygal-charts.yml b/.github/workflows/graalpy-micronaut-pygal-charts.yml
index e337436..8f6cee2 100644
--- a/.github/workflows/graalpy-micronaut-pygal-charts.yml
+++ b/.github/workflows/graalpy-micronaut-pygal-charts.yml
@@ -34,7 +34,7 @@ jobs:
           ./mvnw --no-transfer-progress mn:run &
           mnpid="$!"
           sleep 30
-          curl --fail-with-body -s -D - -o /dev/null http://localhost:8080/java
+          curl --fail-with-body --fail-with-body --silent --dump-header - -o /dev/null http://localhost:8080/java
           kill $mnpid
       - name: Build and run native 'graalpy-micronaut-pygal-charts' using Maven
         run: |
@@ -43,5 +43,5 @@ jobs:
           ./target/demo &
           mnpid="$!"
           sleep 20
-          curl --fail-with-body -s -D - -o /dev/null http://localhost:8080/python
+          curl --fail-with-body --fail-with-body --silent --dump-header - -o /dev/null http://localhost:8080/python
           kill $mnpid
diff --git a/.github/workflows/graalpy-spring-boot-guide.yml b/.github/workflows/graalpy-spring-boot-guide.yml
index 08006c2..439643d 100644
--- a/.github/workflows/graalpy-spring-boot-guide.yml
+++ b/.github/workflows/graalpy-spring-boot-guide.yml
@@ -34,7 +34,7 @@ jobs:
           ./mvnw --no-transfer-progress spring-boot:run &
           sbpid="$!"
           sleep 30
-          curl -s -D - -o /dev/null http://localhost:8080/
+          curl --fail-with-body --silent --dump-header - -o /dev/null http://localhost:8080/
           kill $sbpid
       - name: Build and run native 'graalpy-spring-boot-guide' using Maven
         run: |
@@ -43,5 +43,5 @@ jobs:
           ./target/graalpy-springboot &
           sbpid="$!"
           sleep 20
-          curl -s -D - -o /dev/null http://localhost:8080/
+          curl --fail-with-body --silent --dump-header - -o /dev/null http://localhost:8080/
           kill $sbpid
diff --git a/.github/workflows/graalwasm-micronaut-photon.yml b/.github/workflows/graalwasm-micronaut-photon.yml
index f03ac25..36f6b4a 100644
--- a/.github/workflows/graalwasm-micronaut-photon.yml
+++ b/.github/workflows/graalwasm-micronaut-photon.yml
@@ -35,4 +35,4 @@ jobs:
           ./mvnw --no-transfer-progress clean package -Dpackaging=native-image
           ./target/demo &
           sleep 10
-          curl -s -D - -o /dev/null http://localhost:8080/photo/flipv
+          curl --fail-with-body --silent --dump-header - -o /dev/null http://localhost:8080/photo/flipv
diff --git a/.github/workflows/graalwasm-spring-boot-photon.yml b/.github/workflows/graalwasm-spring-boot-photon.yml
index 617fe1d..0299405 100644
--- a/.github/workflows/graalwasm-spring-boot-photon.yml
+++ b/.github/workflows/graalwasm-spring-boot-photon.yml
@@ -35,4 +35,4 @@ jobs:
           ./mvnw --no-transfer-progress clean -Pnative native:compile
           ./target/demo &
           sleep 10
-          curl -s -D - -o /dev/null http://localhost:8080/photo/flipv
+          curl --fail-with-body --silent --dump-header - -o /dev/null http://localhost:8080/photo/flipv