diff --git a/pkgs/development/coq-modules/coq-ext-lib/default.nix b/pkgs/development/coq-modules/coq-ext-lib/default.nix
index d35c062d6e4..ed9312b5c57 100644
--- a/pkgs/development/coq-modules/coq-ext-lib/default.nix
+++ b/pkgs/development/coq-modules/coq-ext-lib/default.nix
@@ -3,7 +3,8 @@
 let param =
   {
     "8.4" = { version = "0.9.0"; sha256 = "1n3bk003vvbghbrxkhal6drnc0l65jv9y77wd56is3jw9xgiif0w"; };
-    "8.5" = { version = "0.9.3"; sha256 = "05zff5mrkxpvcsw4gi8whjj5w0mdbqzjmb247lq5b7mry0bypwc5"; };
+    "8.5" = { version = "0.9.4"; sha256 = "1y66pamgsdxlq2w1338lj626ln70cwj7k53hxcp933g8fdsa4hp0"; };
+    "8.6" = { version = "0.9.5"; sha256 = "1b4cvz3llxin130g13calw5n1zmvi6wdd5yb8a41q7yyn2hd3msg"; };
   }."${coq.coq-version}";
 in