diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 91c90fecc..296b85ec7 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -24,7 +24,7 @@ jobs:
 
     - name: install gustaf
       run: |
-        python3 -m pip install numpy splinepy scipy
+        python3 -m pip install numpy scipy
         pip install .
 
     - name: prepare test and test