diff --git a/.github/workflows/pyformat.yml b/.github/workflows/pyformat.yml
index 62203caa..5d26a2f0 100644
--- a/.github/workflows/pyformat.yml
+++ b/.github/workflows/pyformat.yml
@@ -24,7 +24,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Format with black
       run: |
-        $CONDA/bin/conda install -c conda-forge black==20.8b1
+        $CONDA/bin/conda install -c conda-forge black==20.8b1 click==8.0.4
         # stop the build if there are Python syntax errors or undefined names
         $CONDA/bin/black minian
     - name: Check for modified files
diff --git a/.github/workflows/testandcov.yml b/.github/workflows/testandcov.yml
index 4ef041f6..4c73d180 100644
--- a/.github/workflows/testandcov.yml
+++ b/.github/workflows/testandcov.yml
@@ -38,7 +38,7 @@ jobs:
           environment-file: environment.yml
       - name: Install test dependencies
         run: |
-          conda install -c conda-forge black==20.8b1 pytest pytest-cov pytest-rerunfailures
+          conda install -c conda-forge black==20.8b1 click==8.0.4 pytest==7.0.1 pytest-cov pytest-rerunfailures coverage==6.3.3
       - name: Lint with black
         run: |
           black --check minian
diff --git a/environment.yml b/environment.yml
index cc22944e..65e1d44d 100644
--- a/environment.yml
+++ b/environment.yml
@@ -41,3 +41,4 @@ dependencies:
   - pymetis=2020.1
   - rechunker=0.3.3
   - medpy=0.4.0
+  - jinja2=2.11.3
diff --git a/requirements/requirements-base.txt b/requirements/requirements-base.txt
index 0fb6a160..84c95e2b 100644
--- a/requirements/requirements-base.txt
+++ b/requirements/requirements-base.txt
@@ -31,3 +31,4 @@ sparse==0.11.2
 pymetis==2020.1
 rechunker==0.3.3
 medpy==0.4.0
+jinja2==2.11.3