diff --git a/.github/workflows/test_development_versions.yml b/.github/workflows/test_development_versions.yml
index 4d0c58920..cac3d71fb 100644
--- a/.github/workflows/test_development_versions.yml
+++ b/.github/workflows/test_development_versions.yml
@@ -43,6 +43,6 @@ jobs:
       - name: Test using tox environment
         shell: bash
         run: |
-          pver=${{ matrix.python-version }}
-          tox -epy${pver/./} -- --run-slow
-          tox -epy${pver/./}-notebook
+          toxpyversion=$(echo ${{ matrix.python-version }} | sed -E 's/^([0-9]+)\.([0-9]+).*$/\1\2/')
+          tox -epy${toxpyversion} -- --run-slow
+          tox -epy${toxpyversion}-notebook
diff --git a/.github/workflows/test_latest_versions.yml b/.github/workflows/test_latest_versions.yml
index 03e079878..a53b1842c 100644
--- a/.github/workflows/test_latest_versions.yml
+++ b/.github/workflows/test_latest_versions.yml
@@ -44,6 +44,6 @@ jobs:
       - name: Test using tox environment
         shell: bash
         run: |
-          pver=${{ matrix.python-version }}
-          tox -epy${pver/./} -- --run-slow
-          tox -epy${pver/./}-notebook
+          toxpyversion=$(echo ${{ matrix.python-version }} | sed -E 's/^([0-9]+)\.([0-9]+).*$/\1\2/')
+          tox -epy${toxpyversion} -- --run-slow
+          tox -epy${toxpyversion}-notebook
diff --git a/.github/workflows/test_minimum_versions.yml b/.github/workflows/test_minimum_versions.yml
index f337a42f7..bf454c7c1 100644
--- a/.github/workflows/test_minimum_versions.yml
+++ b/.github/workflows/test_minimum_versions.yml
@@ -39,6 +39,6 @@ jobs:
       - name: Test using tox environment
         shell: bash
         run: |
-          pver=${{ matrix.python-version }}
-          tox -epy${pver/./} -- --run-slow
-          tox -epy${pver/./}-notebook
+          toxpyversion=$(echo ${{ matrix.python-version }} | sed -E 's/^([0-9]+)\.([0-9]+).*$/\1\2/')
+          tox -epy${toxpyversion} -- --run-slow
+          tox -epy${toxpyversion}-notebook