diff --git a/.github/workflows/deploy-DEV-slim.yml b/.github/workflows/deploy-DEV-slim.yml
index f36b2b09..8fb3e86a 100644
--- a/.github/workflows/deploy-DEV-slim.yml
+++ b/.github/workflows/deploy-DEV-slim.yml
@@ -134,6 +134,7 @@ jobs:
           ERROR_ON_MISSING_EXEC_BIT: true
           VALIDATE_ALL_CODEBASE: false
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          DEFAULT_BRANCH: main
 
       ###############################################################
       # Fix file and dir ownership.                                 #
diff --git a/.github/workflows/deploy-DEV-standard.yml b/.github/workflows/deploy-DEV-standard.yml
index 24ba1556..9c8afa6d 100644
--- a/.github/workflows/deploy-DEV-standard.yml
+++ b/.github/workflows/deploy-DEV-standard.yml
@@ -134,6 +134,7 @@ jobs:
           ERROR_ON_MISSING_EXEC_BIT: true
           VALIDATE_ALL_CODEBASE: false
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          DEFAULT_BRANCH: main
 
       ###############################################################
       # Fix file and dir ownership.                                 #
diff --git a/.github/workflows/stack-linter.yml b/.github/workflows/stack-linter.yml
index 3272819e..e4816cd0 100644
--- a/.github/workflows/stack-linter.yml
+++ b/.github/workflows/stack-linter.yml
@@ -51,3 +51,4 @@ jobs:
           ERROR_ON_MISSING_EXEC_BIT: true
           VALIDATE_ALL_CODEBASE: false
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          DEFAULT_BRANCH: main