diff --git a/.github/workflows/test_benchmark_collection_models.yml b/.github/workflows/test_benchmark_collection_models.yml
index 9ebcc18022..7c7aacb992 100644
--- a/.github/workflows/test_benchmark_collection_models.yml
+++ b/.github/workflows/test_benchmark_collection_models.yml
@@ -53,7 +53,7 @@ jobs:
             $(ls -t python/sdist/dist/amici-*.tar.gz | head -1)[petab,test,vis]
 
     - run: |
-        python3 -m pip install git+https://github.com/petab-dev/libpetab-python.git@develop \
+        python3 -m pip uninstall -y petab && python3 -m pip install git+https://github.com/petab-dev/libpetab-python.git@develop \
         &&  python3 -m pip install -U sympy
 
     # retrieve test models
diff --git a/.github/workflows/test_petab_test_suite.yml b/.github/workflows/test_petab_test_suite.yml
index 1292c57292..8d26af6109 100644
--- a/.github/workflows/test_petab_test_suite.yml
+++ b/.github/workflows/test_petab_test_suite.yml
@@ -71,7 +71,7 @@ jobs:
       - name: Install petab
         run: |
           source ./venv/bin/activate \
-            && python3 -m pip install git+https://github.com/petab-dev/libpetab-python.git@develop \
+            && python3 -m pip uninstall -y petab && python3 -m pip install git+https://github.com/petab-dev/libpetab-python.git@develop \
             && python3 -m pip install sympy>=1.12.1