diff --git a/.github/workflows/measure-coverage.yml b/.github/workflows/measure-coverage.yml
index ad1ea3a..c8c0c9c 100644
--- a/.github/workflows/measure-coverage.yml
+++ b/.github/workflows/measure-coverage.yml
@@ -23,7 +23,9 @@ jobs:
         python -m pip install --upgrade pip
         pip install -e .[advanced]
     - name: Install pytest other dependencies
-      run: pip install pytest pytest-rerunfailures pytest-xdist pytest-cov setuptools osmnx requests neatnet geopandas shapely
+      run: |
+        # Install testing dependencies with compatible versions to avoid serialization issues
+        pip install "pytest>=7.4.0,<8.0.0" "pytest-xdist>=3.3.0,<4.0.0" "pytest-rerunfailures>=11.1,<12.0" pytest-cov setuptools osmnx requests neatnet geopandas shapely
     - name: Run verifications with pytest
       run: pytest -n auto tests/test_verification_straight_road.py tests/test_verification_route_choice.py tests/test_verification_node.py tests/test_verification_exceptional.py tests/test_verification_sioux_falls.py tests/test_verification_multilane.py tests/test_verification_taxi.py tests/test_verification_dta_solvers.py tests/test_other_functions.py tests/test_optional_functions_python313.py --durations=0 -v --cov=uxsim --cov-report=xml --cov-config=.github/.coveragerc
     - name: Upload coverage reports to Codecov
diff --git a/.github/workflows/run-examples.yml b/.github/workflows/run-examples.yml
index 9165ea6..991fcd3 100644
--- a/.github/workflows/run-examples.yml
+++ b/.github/workflows/run-examples.yml
@@ -24,6 +24,8 @@ jobs:
         python -m pip install --upgrade pip
         pip install .
     - name: Install pytest other dependencies
-      run: pip install pytest pytest-xdist setuptools gymnasium torch osmnx deap streamlit
+      run: |
+        # Install testing dependencies with compatible versions to avoid serialization issues
+        pip install "pytest>=7.4.0,<8.0.0" "pytest-xdist>=3.3.0,<4.0.0" "pytest-rerunfailures>=11.1,<12.0" setuptools gymnasium torch osmnx deap streamlit
     - name: Run examples with pytest
       run: pytest -n auto tests/test_examples.py --durations=0 -v
\ No newline at end of file
diff --git a/.github/workflows/test-functions-python313.yml b/.github/workflows/test-functions-python313.yml
index 3a95426..3182162 100644
--- a/.github/workflows/test-functions-python313.yml
+++ b/.github/workflows/test-functions-python313.yml
@@ -21,7 +21,9 @@ jobs:
         python -m pip install --upgrade pip
         pip install .[advanced]
     - name: Install pytest other dependencies
-      run: pip install pytest pytest-rerunfailures pytest-xdist setuptools requests
+      run: |
+        # Install testing dependencies with compatible versions to avoid serialization issues
+        pip install "pytest>=7.4.0,<8.0.0" "pytest-xdist>=3.3.0,<4.0.0" "pytest-rerunfailures>=11.1,<12.0" setuptools requests
     - name: Run tests with pytest
       run: pytest -n auto tests/test_optional_functions_python313.py --durations=0 -v
 
diff --git a/.github/workflows/test-functions.yml b/.github/workflows/test-functions.yml
index c9e22de..3d5c452 100644
--- a/.github/workflows/test-functions.yml
+++ b/.github/workflows/test-functions.yml
@@ -21,7 +21,9 @@ jobs:
         python -m pip install --upgrade pip
         pip install .
     - name: Install pytest other dependencies
-      run: pip install pytest pytest-rerunfailures pytest-xdist setuptools osmnx requests
+      run: |
+        # Install testing dependencies with compatible versions to avoid serialization issues
+        pip install "pytest>=7.4.0,<8.0.0" "pytest-xdist>=3.3.0,<4.0.0" "pytest-rerunfailures>=11.1,<12.0" setuptools osmnx requests
     - name: Run tests with pytest
       run: pytest -n auto tests/test_other_functions.py --durations=0 -v
 
diff --git a/.github/workflows/test-pip.yml b/.github/workflows/test-pip.yml
index ff5026a..71d3685 100644
--- a/.github/workflows/test-pip.yml
+++ b/.github/workflows/test-pip.yml
@@ -24,6 +24,8 @@ jobs:
         python -m pip install --upgrade pip
         pip install uxsim
     - name: Install pytest other dependencies
-      run: pip install pytest pytest-rerunfailures pytest-xdist setuptools
+      run: |
+        # Install testing dependencies with compatible versions to avoid serialization issues  
+        pip install "pytest>=7.4.0,<8.0.0" "pytest-xdist>=3.3.0,<4.0.0" "pytest-rerunfailures>=11.1,<12.0" setuptools
     - name: Run tests with pytest
       run: pytest -n auto tests/test_verification_sioux_falls.py --durations=0 -v
diff --git a/.github/workflows/verify-module.yml b/.github/workflows/verify-module.yml
index 59b438c..56e3322 100644
--- a/.github/workflows/verify-module.yml
+++ b/.github/workflows/verify-module.yml
@@ -21,6 +21,8 @@ jobs:
         python -m pip install --upgrade pip
         pip install .
     - name: Install pytest other dependencies
-      run: pip install pytest pytest-rerunfailures pytest-xdist setuptools
+      run: |
+        # Install testing dependencies with compatible versions to avoid serialization issues
+        pip install "pytest>=7.4.0,<8.0.0" "pytest-xdist>=3.3.0,<4.0.0" "pytest-rerunfailures>=11.1,<12.0" setuptools
     - name: Run verifications with pytest
       run: pytest -n auto tests/test_verification_straight_road.py tests/test_verification_route_choice.py tests/test_verification_node.py tests/test_verification_exceptional.py tests/test_verification_sioux_falls.py tests/test_verification_multilane.py tests/test_verification_taxi.py tests/test_verification_dta_solvers.py --durations=0 -v
\ No newline at end of file