diff --git a/.github/workflows/ci-minimal.yml b/.github/workflows/ci-minimal.yml
index 7bd8b1d..ad7d823 100644
--- a/.github/workflows/ci-minimal.yml
+++ b/.github/workflows/ci-minimal.yml
@@ -34,7 +34,7 @@ jobs:
       shell: bash -l {0}
       run: |
         mamba install typing_extensions!=4.2 pytest
-        mamba install pip numpy==1.17 scipy==1.0 numba==0.53
+        mamba install pip numpy==1.17 scipy==1.0 numba==0.53 importlib_resources
 
     - name: Install
       shell: bash -l {0}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c35dcd7..9b26ef1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -39,7 +39,7 @@ jobs:
       shell: bash -l {0}
       run: |
         mamba install typing_extensions!=4.2
-        mamba install pip numpy scipy numba pytest pytest-cov pytest-doctestplus
+        mamba install pip numpy scipy numba pytest pytest-cov pytest-doctestplus importlib_resources
     - name: Install
       shell: bash -l {0}
       run: |