diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 10f2a825..9b0fe651 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -77,26 +77,26 @@ jobs:
           cd ..
           cd ..
 
-      # - name: test non-bundled build
-      #   shell: bash -l {0}
-      #   run: |
-      #     pip install -vv -e . \
-      #       --global-option="build_ext" \
-      #       --global-option="--use-system-fitsio" \
-      #       --global-option="--system-fitsio-includedir=$HOME/cfitsio-static-install/include" \
-      #       --global-option="--system-fitsio-libdir=$HOME/cfitsio-static-install/lib"
-      #     SKIP_BZIP_TEST=true pytest -vv fitsio
-      #
-      # - name: test non-bundled build w/ env vars
-      #   shell: bash -l {0}
-      #   run: |
-      #     rm -rf build*
-      #     find . -name "*.so" -type f -delete
-      #     export FITSIO_USE_SYSTEM_FITSIO=1
-      #     export FITSIO_SYSTEM_FITSIO_INCLUDEDIR=$HOME/cfitsio-static-install/include
-      #     export FITSIO_SYSTEM_FITSIO_LIBDIR=$HOME/cfitsio-static-install/lib
-      #     pip install -vv -e .
-      #     SKIP_BZIP_TEST=true pytest -vv fitsio
+      - name: test non-bundled build
+        shell: bash -l {0}
+        run: |
+          pip install -vv -e . \
+            --global-option="build_ext" \
+            --global-option="--use-system-fitsio" \
+            --global-option="--system-fitsio-includedir=$HOME/cfitsio-static-install/include" \
+            --global-option="--system-fitsio-libdir=$HOME/cfitsio-static-install/lib"
+          SKIP_BZIP_TEST=true pytest -vv fitsio
+
+      - name: test non-bundled build w/ env vars
+        shell: bash -l {0}
+        run: |
+          rm -rf build*
+          find . -name "*.so" -type f -delete
+          export FITSIO_USE_SYSTEM_FITSIO=1
+          export FITSIO_SYSTEM_FITSIO_INCLUDEDIR=$HOME/cfitsio-static-install/include
+          export FITSIO_SYSTEM_FITSIO_LIBDIR=$HOME/cfitsio-static-install/lib
+          pip install -vv -e .
+          SKIP_BZIP_TEST=true pytest -vv fitsio
 
       - name: test bundled build
         shell: bash -l {0}