diff --git a/.github/workflows/test-suite.yml b/.github/workflows/test-suite.yml
index 86b4a03d4..e43a818d8 100644
--- a/.github/workflows/test-suite.yml
+++ b/.github/workflows/test-suite.yml
@@ -14,20 +14,27 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ["3.6", "3.7", "3.8", "3.9", "3.10"]
+        python-version: ["3.6", "3.7", "3.8", "3.9", "3.10", "pypy-3.6", "pypy-3.7", "pypy-3.8"]
 
     steps:
       - uses: "actions/checkout@v2"
       - uses: "actions/setup-python@v2"
         with:
           python-version: "${{ matrix.python-version }}"
+
       - name: "Install dependencies"
         run: "scripts/install"
+
       - name: "Run linting checks"
         run: "scripts/check"
+        if: ${{ startsWith('pypy', matrix.python-version) }}
+
       - name: "Build package & docs"
         run: "scripts/build"
+        if: ${{ startsWith('pypy', matrix.python-version) }}
+
       - name: "Run tests"
         run: "scripts/test"
+
       - name: "Enforce coverage"
         run: "scripts/coverage"
diff --git a/requirements.txt b/requirements.txt
index 59cc2edf7..5e0914cbd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,13 +6,13 @@ pyyaml
 requests
 
 # Testing
-autoflake
-black==20.8b1
+autoflake; platform_python_implementation != 'PyPy'
+black==20.8b1; platform_python_implementation != 'PyPy'
 coverage>=5.3
 databases[sqlite]
 flake8
 isort==5.*
-mypy
+mypy; platform_python_implementation != 'PyPy'
 types-requests
 types-contextvars
 types-PyYAML