diff --git a/.github/workflows/unit_tests_mac.yaml b/.github/workflows/unit_tests_mac.yaml
index e38fbe00..55332a9a 100644
--- a/.github/workflows/unit_tests_mac.yaml
+++ b/.github/workflows/unit_tests_mac.yaml
@@ -22,7 +22,7 @@ jobs:
         uses: actions/checkout@v3
         with:
           repository: PaNOSC-ViNYL/libpyvinyl
-          ref: master
+          ref: remove_pint_pin
           path: libpyvinyl
     
       - name: Set up Python ${{ matrix.python-version }}
diff --git a/.github/workflows/unit_tests_ubuntu.yaml b/.github/workflows/unit_tests_ubuntu.yaml
index f2aaa6a1..07ecfb82 100644
--- a/.github/workflows/unit_tests_ubuntu.yaml
+++ b/.github/workflows/unit_tests_ubuntu.yaml
@@ -22,7 +22,7 @@ jobs:
         uses: actions/checkout@v3
         with:
           repository: PaNOSC-ViNYL/libpyvinyl
-          ref: master
+          ref: remove_pint_pin
           path: libpyvinyl
     
       - name: Set up Python ${{ matrix.python-version }}
diff --git a/.github/workflows/unit_tests_windows.yaml b/.github/workflows/unit_tests_windows.yaml
index 6347b9f4..333560a3 100644
--- a/.github/workflows/unit_tests_windows.yaml
+++ b/.github/workflows/unit_tests_windows.yaml
@@ -22,7 +22,7 @@ jobs:
         uses: actions/checkout@v3
         with:
           repository: PaNOSC-ViNYL/libpyvinyl
-          ref: master
+          ref: remove_pint_pin
           path: libpyvinyl
     
       - name: Set up Python ${{ matrix.python-version }}