diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 2f14fd73a12..6b1153dfcae 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -14246,12 +14246,12 @@ in modules // {
   };
 
   openpyxl = buildPythonPackage rec {
-    version = "2.3.3";
+    version = "2.3.5";
     name = "openpyxl-${version}";
 
     src = pkgs.fetchurl {
       url = "mirror://pypi/o/openpyxl/${name}.tar.gz";
-      sha256 = "1zigyvsq45izkhr1h5gisgi0ag5dm6kz09f01c2cgdfav1bl3mlk";
+      sha256 = "0qj7d8l1qc6cjwk1ps01dyh53b3p2k2k7hwmj98y2257jj5mf1s3";
     };
 
     buildInputs = with self; [ pytest ];