diff --git a/tests/requirements/base.txt b/tests/requirements/base.txt
index 4f702b5495..4e996890bb 100644
--- a/tests/requirements/base.txt
+++ b/tests/requirements/base.txt
@@ -1,4 +1,4 @@
-argon2-cffi >= 16.0.0
+argon2-cffi == 16.0.0
 bcrypt
 docutils
 geoip2