diff --git a/.github/unittest/windows_optdepts/scripts/environment.yml b/.github/unittest/windows_optdepts/scripts/environment.yml
index 260b6f48605..2740c77f434 100644
--- a/.github/unittest/windows_optdepts/scripts/environment.yml
+++ b/.github/unittest/windows_optdepts/scripts/environment.yml
@@ -16,4 +16,3 @@ dependencies:
     - pyyaml
     - scipy
     - coverage
-    - numpy<2.0
diff --git a/.github/unittest/windows_optdepts/scripts/install.sh b/.github/unittest/windows_optdepts/scripts/install.sh
index 5c425d18a95..f13b83a0be0 100644
--- a/.github/unittest/windows_optdepts/scripts/install.sh
+++ b/.github/unittest/windows_optdepts/scripts/install.sh
@@ -37,6 +37,7 @@ fi
 
 # submodules
 git submodule sync && git submodule update --init --recursive
+python -m pip install "numpy<2.0"
 
 printf "Installing PyTorch with %s\n" "${cudatoolkit}"
 if [[ "$TORCH_VERSION" == "nightly" ]]; then