diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index 738a89d..da14d9e 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -5,9 +5,9 @@ on:
   workflow_dispatch:
   merge_group:
   push:
-    branches: [ main ]
+    branches: [ cpp20 ]
   pull_request:
-    branches: [ main ]
+    branches: [ cpp20 ]
 
 env:
   DEBIAN_FRONTEND: noninteractive
diff --git a/.github/workflows/usage_test.yml b/.github/workflows/usage_test.yml
index b4e7b18..21a5d5c 100644
--- a/.github/workflows/usage_test.yml
+++ b/.github/workflows/usage_test.yml
@@ -5,9 +5,9 @@ on:
   workflow_dispatch:
   merge_group:
   push:
-    branches: [ main ]
+    branches: [ cpp20 ]
   pull_request:
-    branches: [ main ]
+    branches: [ cpp20 ]
 
 env:
   DEBIAN_FRONTEND: noninteractive