diff --git a/pkgs/development/tools/continuous-integration/buildbot/default.nix b/pkgs/development/tools/continuous-integration/buildbot/default.nix
index 6a5da56092d83..fc0ab09fd0a44 100644
--- a/pkgs/development/tools/continuous-integration/buildbot/default.nix
+++ b/pkgs/development/tools/continuous-integration/buildbot/default.nix
@@ -3,10 +3,25 @@
   newScope,
   python3,
   recurseIntoAttrs,
+  fetchFromGitHub,
 }:
 # Take packages from self first, then python.pkgs (and secondarily pkgs)
 lib.makeScope (self: newScope (self.python.pkgs // self)) (self: {
-  python = python3;
+  python = python3.override {
+    self = self.python;
+    packageOverrides = self: super: {
+      service-identity = super.service-identity.overridePythonAttrs (oldAttrs: {
+        version = "24.2.0";
+        src = fetchFromGitHub {
+          owner = "pyca";
+          repo = "service-identity";
+          tag = "24.2.0";
+          hash = "sha256-onxCUWqGVeenLqB5lpUpj3jjxTM61ogXCQOGnDnClT4=";
+        };
+        checkInputs = [ super.pyopenssl ];
+      });
+    };
+  };
 
   buildbot-pkg = self.callPackage ./pkg.nix { };