diff --git a/.python-version b/.python-version
new file mode 100644
index 00000000..cc1923a4
--- /dev/null
+++ b/.python-version
@@ -0,0 +1 @@
+3.8
diff --git a/requirements-test.txt b/requirements-test.txt
index 6622cf42..e39f19fc 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,5 +1,7 @@
 mock
-vcrpy<6  # https://github.com/kevin1024/vcrpy/issues/885
+urllib3==1.26.20; implementation_name == 'pypy'
+vcrpy; implementation_name != 'pypy'
+vcrpy < 6; implementation_name == 'pypy'
 pytest
 pytest-cov
 responses