diff --git a/pkgs/development/python-modules/python-otr/default.nix b/pkgs/development/python-modules/python-otr/default.nix
index 2b08bbffa4506..d83d259724506 100644
--- a/pkgs/development/python-modules/python-otr/default.nix
+++ b/pkgs/development/python-modules/python-otr/default.nix
@@ -24,10 +24,13 @@ buildPythonPackage rec {
 
   meta = with stdenv.lib; {
     description = "A pure python implementation of OTR";
-    homepage = https://github.com/AGProjects/otr;
+    homepage = "https://github.com/AGProjects/python-otr";
     license = licenses.lgpl21Plus;
     platforms = platforms.linux;
     maintainers = with maintainers; [ edwtjo ];
+    # The package itself does not support python3, and its transitive
+    # dependencies rely on namespace package support that does not work in
+    # Nix's python2 infra. See #74619 for details.
+    broken = true;
   };
-
 }