diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index c43a9c8..6537901 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -48,6 +48,7 @@ jobs:
           fetch-depth: 0
 
       - name: Cache Pip Dependencies
+        if: ${{ github.ref == 'refs/heads/main' }}
         uses: actions/cache@v4
         with:
           path: ~/.cache/pip
@@ -56,6 +57,7 @@ jobs:
             ${{ runner.os }}-pip-
 
       - name: Cache .venv
+        if: ${{ github.ref == 'refs/heads/main' }}
         uses: actions/cache@v4
         with:
           path: .venv
@@ -64,6 +66,7 @@ jobs:
             ${{ runner.os }}-venv-
 
       - name: Cache .tox
+        if: ${{ github.ref == 'refs/heads/main' }}
         uses: actions/cache@v4
         with:
           path: .tox