diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index b778c9804..90152d638 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -2,9 +2,11 @@ name: C/C++ CI
 
 on:
   push:
-    branches: [ master, ci ]
+    branches: [ master, ci, V_9_0 ]
+    paths: [ '**.c', '**.h', '**.m4', '**.sh', '**.yml', 'Makefile.in', 'configure.ac' ]
   pull_request:
     branches: [ master ]
+    paths: [ '**.c', '**.h', '**.m4', '**.sh', '**.yml', 'Makefile.in', 'configure.ac' ]
 
 jobs:
   ci:
diff --git a/.github/workflows/selfhosted.yml b/.github/workflows/selfhosted.yml
index ec2c29825..490dbd62a 100644
--- a/.github/workflows/selfhosted.yml
+++ b/.github/workflows/selfhosted.yml
@@ -2,7 +2,8 @@ name: C/C++ CI self-hosted
 
 on:
   push:
-    branches: [ master, ci ]
+    branches: [ master, ci, V_9_0 ]
+    paths: [ '**.c', '**.h', '**.m4', '**.sh', '**.yml', 'Makefile.in', 'configure.ac' ]
 
 jobs:
   selfhosted:
diff --git a/.github/workflows/upstream.yml b/.github/workflows/upstream.yml
index b91083c65..ba0ef8272 100644
--- a/.github/workflows/upstream.yml
+++ b/.github/workflows/upstream.yml
@@ -3,6 +3,7 @@ name: Upstream self-hosted
 on:
   push:
     branches: [ master, ci ]
+    paths: [ '**.c', '**.h' ]
 
 jobs:
   selfhosted: