diff --git a/.github/workflows/issues.yml b/.github/workflows/issues.yml
deleted file mode 100644
index 6347d1d..0000000
--- a/.github/workflows/issues.yml
+++ /dev/null
@@ -1,12 +0,0 @@
-# This file is managed in https://github.com/happyprime/projects
-name: Add new issues to Happy Prime project
-
-on:
-  issues:
-    types:
-      - opened
-
-jobs:
-  add-to-project:
-    uses: happyprime/workflows/.github/workflows/issues.yml@trunk
-    secrets: inherit
diff --git a/.github/workflows/phpcs.yml b/.github/workflows/phpcs.yml
index 9ffa406..f990f89 100644
--- a/.github/workflows/phpcs.yml
+++ b/.github/workflows/phpcs.yml
@@ -3,7 +3,13 @@
 # This file is managed in https://github.com/happyprime/projects
 name: PHPCS (Default, PHP 8.3)
 
-on: pull_request
+on:
+  pull_request:
+    # A change to another workflow file is no reason to run this one.
+    paths:
+      - '**'
+      - '!.github/workflows/**'
+      - .github/workflows/phpcs.yml
 
 # The GITHUB_TOKEN used by Dependabot has read-only permissions by default. We
 # provide write permissions to this workflow so that comments can be left on
diff --git a/.github/workflows/phpstan.yml b/.github/workflows/phpstan.yml
index 191b169..8f2cfc9 100644
--- a/.github/workflows/phpstan.yml
+++ b/.github/workflows/phpstan.yml
@@ -3,7 +3,13 @@
 # This file is managed in https://github.com/happyprime/projects
 name: PHPStan (Default, PHP 8.3)
 
-on: pull_request
+on:
+  pull_request:
+    # A change to another workflow file is no reason to run this one.
+    paths:
+      - '**'
+      - '!.github/workflows/**'
+      - .github/workflows/phpstan.yml
 
 # The GITHUB_TOKEN used by Dependabot has read-only permissions by default. We
 # provide write permissions to this workflow so that comments can be left on
diff --git a/.github/workflows/plugin-check.yml b/.github/workflows/plugin-check.yml
index c7fe607..a6a23cd 100644
--- a/.github/workflows/plugin-check.yml
+++ b/.github/workflows/plugin-check.yml
@@ -7,9 +7,19 @@ on:
   push:
     branches:
       - trunk
+    # A change to another workflow file is no reason to run this one.
+    paths:
+      - '**'
+      - '!.github/workflows/**'
+      - .github/workflows/plugin-check.yml
   pull_request:
     branches:
       - trunk
+    # A change to another workflow file is no reason to run this one.
+    paths:
+      - '**'
+      - '!.github/workflows/**'
+      - .github/workflows/plugin-check.yml
 
 jobs:
   call-workflow:
diff --git a/.github/workflows/verify-build.yml b/.github/workflows/verify-build.yml
index e50dd7f..32843b1 100644
--- a/.github/workflows/verify-build.yml
+++ b/.github/workflows/verify-build.yml
@@ -1,7 +1,13 @@
 # This file is managed in https://github.com/happyprime/projects
 name: Verify build (Node 24)
 
-on: pull_request
+on:
+  pull_request:
+    # A change to another workflow file is no reason to run this one.
+    paths:
+      - '**'
+      - '!.github/workflows/**'
+      - .github/workflows/verify-build.yml
 
 # The GITHUB_TOKEN used by Dependabot has read-only permissions by default. We
 # provide write permissions to this workflow so that comments can be left on