diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index fef8174eb..7c5a34c4f 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -121,7 +121,7 @@ jobs:
         env:
           REPO_ACCESS_TOKEN: ${{ secrets.REPO_ACCESS_TOKEN }}
         if: env.REPO_ACCESS_TOKEN
-        uses: peter-evans/repository-dispatch@v2
+        uses: peter-evans/repository-dispatch@v3
         with:
           repository: KSP-CKAN/CKAN-ModInstaller
           event-type: deploy
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2e2ae070b..c4af91e4b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -35,6 +35,7 @@ All notable changes to this project will be documented in this file.
 - [CLI] Make `ckan compat add` take multiple versions, add `clear` and `set` (#4151 by: HebaruSan)
 - [GUI] Add mod support links to Help menu (#4154 by: HebaruSan)
 - [GUI] Don't hide other providing mods for installed, make installed bold (#4163 by: HebaruSan)
+- [CLI] Set headless mode automatically (#4166 by: HebaruSan)
 
 ### Bugfixes
 
diff --git a/Cmdline/Options.cs b/Cmdline/Options.cs
index 86e459357..53080fb09 100644
--- a/Cmdline/Options.cs
+++ b/Cmdline/Options.cs
@@ -262,6 +262,18 @@ public virtual int Handle(GameInstanceManager manager, IUser user)
                 log.Info("Verbose logging enabled");
             }
 
+            // Auto-detect whether IO device is interactive
+            if (!Headless && (Console.IsInputRedirected || Console.IsOutputRedirected))
+            {
+                log.InfoFormat("Setting headless mode ({0})",
+                               Console.IsInputRedirected
+                                   ? Console.IsOutputRedirected
+                                       ? "I/O redirected"
+                                       : "input redirected"
+                                   : "output redirected");
+                Headless = true;
+            }
+
             // Assign user-agent string if user has given us one
             if (NetUserAgent != null)
             {