diff --git a/.github/actions/install-conda/action.yml b/.github/actions/install-conda/action.yml
index 2628a8799f..a059521999 100644
--- a/.github/actions/install-conda/action.yml
+++ b/.github/actions/install-conda/action.yml
@@ -7,6 +7,11 @@ inputs:
   python-version:
     description: 'What version of Python to use'
     required: true
+  need-cartopy:
+    description: 'Whether Cartopy support is needed'
+    required: false
+    default: 'false'
+
 runs:
   using: composite
   steps:
diff --git a/.github/workflows/tests-conda.yml b/.github/workflows/tests-conda.yml
index eb2d9f1d7f..3bde08225c 100644
--- a/.github/workflows/tests-conda.yml
+++ b/.github/workflows/tests-conda.yml
@@ -46,6 +46,7 @@ jobs:
       with:
         type: 'test'
         python-version: ${{ matrix.python-version }}
+        need-cartopy: true
 
     - name: Run tests
       uses: ./.github/actions/run-tests