diff --git a/.github/workflows/test_latest.yml b/.github/workflows/test_latest.yml
index 885f9942a..677f5d967 100644
--- a/.github/workflows/test_latest.yml
+++ b/.github/workflows/test_latest.yml
@@ -122,12 +122,18 @@ jobs:
           ${{ steps.python.outputs.python-path }} -m pip install --pre pytest cython sympy pyparsing jinja2 sphinx
       - name: Install Brian2
         run: ${{ steps.python.outputs.python-path }} -m pip install --pre -i https://pypi.anaconda.org/scientific-python-nightly-wheels/simple --extra-index-url https://pypi.org/simple .
+      - name: Determine Cython cache dir
+        id: cython-cache
+        run: |
+          CACHE_DIR=$(python -c 'import os; from Cython.Utils import get_cython_cache_dir; print(os.path.join(get_cython_cache_dir(), "brian_extensions"))')
+          echo "Cython cache dir: $CACHE_DIR"
+          echo "cachedir=$CACHE_DIR" >> "$GITHUB_OUTPUT"
       - name: restore Cython cache
         uses: actions/cache@v4
         if: ${{ ! matrix.standalone }}
         with:
           key: cython-extensions-latest-${{ matrix.os }}-${{ matrix.python-version }}-32bit-${{ matrix.float_dtype_32 }}
-          path: ~/.cython/brian_extensions
+          path: ${{ steps.cython-cache.outputs.cachedir }}
       - name: Run Tests
         run: |
           cd  ${{ github.workspace }}/.. # move out of the workspace to avoid direct import
diff --git a/.github/workflows/testsuite.yml b/.github/workflows/testsuite.yml
index bbcc0b061..614bc3a2c 100644
--- a/.github/workflows/testsuite.yml
+++ b/.github/workflows/testsuite.yml
@@ -74,13 +74,20 @@ jobs:
         run: |
           conda install --quiet --yes pip gsl
           python -m pip install .[test] coverage
+      
+      - name: Determine Cython cache dir
+        id: cython-cache
+        run: |
+          CACHE_DIR=$(python -c 'import os; from Cython.Utils import get_cython_cache_dir; print(os.path.join(get_cython_cache_dir(), "brian_extensions"))')
+          echo "Cython cache dir: $CACHE_DIR"
+          echo "cachedir=$CACHE_DIR" >> "$GITHUB_OUTPUT"
 
       - name: restore Cython cache
         uses: actions/cache@v4
         if: ${{ ! matrix.standalone }}
         with:
           key: cython-extensions-${{ matrix.os }}-${{ matrix.python-version }}-32bit-${{ matrix.float_dtype_32 }}
-          path: ~/.cython/brian_extensions
+          path: ${{ steps.cython-cache.outputs.cachedir }}
 
       - name: Run Tests
         run: |