diff --git a/pkgs/development/python-modules/cirq-rigetti/default.nix b/pkgs/development/python-modules/cirq-rigetti/default.nix
index 8717b09a49ce..dbd93fdfa2fc 100644
--- a/pkgs/development/python-modules/cirq-rigetti/default.nix
+++ b/pkgs/development/python-modules/cirq-rigetti/default.nix
@@ -34,6 +34,7 @@ buildPythonPackage rec {
   postPatch = ''
     substituteInPlace requirements.txt \
       --replace "attrs~=20.3.0" "attrs" \
+      --replace "certifi~=2021.5.30" "certifi" \
       --replace "h11~=0.9.0" "h11" \
       --replace "httpcore~=0.11.1" "httpcore" \
       --replace "httpx~=0.15.5" "httpx" \