diff --git a/.github/workflows/functional_test.yml b/.github/workflows/functional_test.yml
index 17f870a..6553c59 100644
--- a/.github/workflows/functional_test.yml
+++ b/.github/workflows/functional_test.yml
@@ -41,13 +41,6 @@ jobs:
         extra-specs: |
           python=${{ matrix.python-version }}
 
-    - name: Install other dependencies
-      shell: bash -l {0}
-      run: |
-        pip install packaging # jigsaw dependency in its setup.py
-        python ./setup.py install_jigsaw
-        pip install .
-
     - name: Prepare example DEM
       if: runner.os == 'Windows'
       shell: bash -l {0}
diff --git a/environment.yml b/environment.yml
index 25df2d6..553d892 100644
--- a/environment.yml
+++ b/environment.yml
@@ -23,3 +23,4 @@ dependencies:
   - pytz
   - colored-traceback
   - typing-extensions
+  - jigsawpy