diff --git a/.circleci/config.yml b/.circleci/config.yml
index b3685ab..306a3a0 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -76,12 +76,11 @@ jobs:
                   command: |
                       source venv_test/bin/activate
                       pip install --upgrade pip setuptools wheel gym "numpy<2" grid2op==1.0.0
-                      pip install -U pybind11
                       git submodule init
                       git submodule update
                       make
                       CC=gcc python setup.py build
-                      python -m pip install -U .
+                      python -m pip install -e .
                       pip freeze
             - run:
                 name: legacy test (grid2op 1.0.0)
@@ -95,36 +94,48 @@ jobs:
                 command: |
                       source venv_test/bin/activate
                       python -m pip install grid2op~=1.1
+                      sed -i -e 's/np.int)/np.int32)/g' venv_test/lib/python3.*/site-packages/grid2op/Backend/PandaPowerBackend.py
+                      sed -i -e 's/np.bool/np.bool_/g' venv_test/lib/python3.*/site-packages/grid2op/dtypes.py
                       python -m unittest lightsim2grid/tests/test_compat_legacy_grid2op.py
             - run:
                 name: legacy test (grid2op ~1.2)
                 command: |
                       source venv_test/bin/activate
                       python -m pip install grid2op~=1.2
+                      sed -i -e 's/np.int)/np.int32)/g' venv_test/lib/python3.*/site-packages/grid2op/Backend/PandaPowerBackend.py
+                      sed -i -e 's/np.bool/np.bool_/g' venv_test/lib/python3.*/site-packages/grid2op/dtypes.py
                       python -m unittest lightsim2grid/tests/test_compat_legacy_grid2op.py
             - run:
                 name: legacy test (grid2op ~1.3)
                 command: |
                       source venv_test/bin/activate
                       python -m pip install grid2op~=1.3
+                      sed -i -e 's/np.int)/np.int32)/g' venv_test/lib/python3.*/site-packages/grid2op/Backend/PandaPowerBackend.py
+                      sed -i -e 's/np.bool/np.bool_/g' venv_test/lib/python3.*/site-packages/grid2op/dtypes.py
                       python -m unittest lightsim2grid/tests/test_compat_legacy_grid2op.py
             - run:
                 name: legacy test (grid2op ~1.4)
                 command: |
                       source venv_test/bin/activate
                       python -m pip install grid2op~=1.4
+                      sed -i -e 's/np.int)/np.int32)/g' venv_test/lib/python3.*/site-packages/grid2op/Backend/PandaPowerBackend.py
+                      sed -i -e 's/np.bool/np.bool_/g' venv_test/lib/python3.*/site-packages/grid2op/dtypes.py
                       python -m unittest lightsim2grid/tests/test_compat_legacy_grid2op.py
             - run:
                 name: legacy test (grid2op ~1.5)
                 command: |
                       source venv_test/bin/activate
                       python -m pip install grid2op~=1.5
+                      sed -i -e 's/np.int)/np.int32)/g' venv_test/lib/python3.*/site-packages/grid2op/Backend/PandaPowerBackend.py
+                      sed -i -e 's/np.bool/np.bool_/g' venv_test/lib/python3.*/site-packages/grid2op/dtypes.py
                       python -m unittest lightsim2grid/tests/test_compat_legacy_grid2op.py
             - run:
                 name: legacy test (grid2op ~1.6)
                 command: |
                       source venv_test/bin/activate
                       python -m pip install grid2op~=1.6
+                      sed -i -e 's/np.int)/np.int32)/g' venv_test/lib/python3.*/site-packages/grid2op/Backend/PandaPowerBackend.py
+                      sed -i -e 's/np.bool/np.bool_/g' venv_test/lib/python3.*/site-packages/grid2op/dtypes.py
                       python -m unittest lightsim2grid/tests/test_compat_legacy_grid2op.py
             - run:
                 name: legacy test (grid2op ~1.7)
@@ -155,12 +166,16 @@ jobs:
                 command: |
                       source venv_test/bin/activate
                       python -m pip install grid2op==0.9.1.post1
+                      sed -i -e 's/np.int)/np.int32)/g' venv_test/lib/python3.*/site-packages/grid2op/Backend/PandaPowerBackend.py
+                      sed -i -e 's/np.bool/np.bool_/g' venv_test/lib/python3.*/site-packages/grid2op/dtypes.py
                       python -m unittest lightsim2grid/tests/test_compat_legacy_grid2op.py
             - run:
                 name: legacy test (grid2op 1.2.2 - l2rpn neurips 2020)
                 command: |
                       source venv_test/bin/activate
                       python -m pip install grid2op==1.2.2
+                      sed -i -e 's/np.int)/np.int32)/g' venv_test/lib/python3.*/site-packages/grid2op/Backend/PandaPowerBackend.py
+                      sed -i -e 's/np.bool/np.bool_/g' venv_test/lib/python3.*/site-packages/grid2op/dtypes.py
                       python -m unittest lightsim2grid/tests/test_compat_legacy_grid2op.py
             - run:
                 name: legacy test (grid2op 1.6.3 - l2rpn Icaps 2021)