diff --git a/pkgs/development/python-modules/certauth/default.nix b/pkgs/development/python-modules/certauth/default.nix
index 14368d65e608..d3ae86b61e22 100644
--- a/pkgs/development/python-modules/certauth/default.nix
+++ b/pkgs/development/python-modules/certauth/default.nix
@@ -49,6 +49,7 @@ buildPythonPackage {
   ];
 
   meta = {
+    broken = lib.versionAtLeast pyopenssl.version "26.3";
     description = "Simple CertificateAuthority and host certificate creation, useful for man-in-the-middle HTTPS proxy";
     mainProgram = "certauth";
     homepage = "https://github.com/ikreymer/certauth";