diff --git a/pkgs/applications/science/logic/coq/default.nix b/pkgs/applications/science/logic/coq/default.nix
index 7427875895f3..2373ae43e76e 100644
--- a/pkgs/applications/science/logic/coq/default.nix
+++ b/pkgs/applications/science/logic/coq/default.nix
@@ -27,6 +27,7 @@ let
    "8.8.1" = "1hlf58gwazywbmfa48219amid38vqdl94yz21i11b4map6jfwhbk";
    "8.8.2" = "1lip3xja924dm6qblisk1bk0x8ai24s5xxqxphbdxj6djglj68fd";
    "8.9.0" = "1dkgdjc4n1m15m1p724hhi5cyxpqbjw6rxc5na6fl3v4qjjfnizh";
+   "8.9.1" = "1xrq6mkhpq994bncmnijf8jwmwn961kkpl4mwwlv7j3dgnysrcv2";
    "8.10+beta1" = "19wf39i0ap2vakglgdlqxpjd3l1h5w7dp460w8y7nc1y06b2153h";
   }."${version}";
   coq-version = stdenv.lib.versions.majorMinor version;
diff --git a/pkgs/top-level/coq-packages.nix b/pkgs/top-level/coq-packages.nix
index 21ce3a91cfd6..9a1bdb07d5b9 100644
--- a/pkgs/top-level/coq-packages.nix
+++ b/pkgs/top-level/coq-packages.nix
@@ -106,7 +106,7 @@ in rec {
     version = "8.8.2";
   };
   coq_8_9 = callPackage ../applications/science/logic/coq {
-    version = "8.9.0";
+    version = "8.9.1";
   };
   coq_8_10 = callPackage ../applications/science/logic/coq {
     version = "8.10+beta1";