diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f5fc1e3..6881a26 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -259,7 +259,7 @@ jobs:
 
       - name: Install test dependencies
         run: |
-          pip install pytest pytest-pyodide pytest-httpserver auditwheel-emscripten pytest-asyncio
+          pip install -r requirements.txt
 
       - name: Run tests
         shell: bash -l {0}
diff --git a/environment.yml b/environment.yml
index 9c9d0ab..28d7c91 100644
--- a/environment.yml
+++ b/environment.yml
@@ -16,7 +16,3 @@ dependencies:
   - wget
   - setuptools
   - gfortran
-  - pip:
-    - pytest
-    - pytest-pyodide==0.58.1
-    - pytest-httpserver
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..b165a1a
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,5 @@
+pytest
+pytest-pyodide==0.58.3
+pytest-httpserver
+auditwheel-emscripten
+pytest-asyncio