diff --git a/pkgs/development/libraries/fmt/default.nix b/pkgs/development/libraries/fmt/default.nix
index bec7860223af..07adb5fde829 100644
--- a/pkgs/development/libraries/fmt/default.nix
+++ b/pkgs/development/libraries/fmt/default.nix
@@ -33,7 +33,7 @@ let
           fmt (formerly cppformat) is an open-source formatting library. It can be
           used as a fast and safe alternative to printf and IOStreams.
         '';
-        homepage = "http://fmtlib.net/";
+        homepage = "https://fmt.dev/";
         downloadPage = "https://github.com/fmtlib/fmt/";
         maintainers = [ maintainers.jdehaas ];
         license = licenses.mit;
@@ -51,4 +51,9 @@ in
     version = "8.1.1";
     sha256 = "sha256-leb2800CwdZMJRWF5b1Y9ocK0jXpOX/nwo95icDf308=";
   };
+
+  fmt_9 = generic {
+    version = "9.0.0";
+    sha256 = "sha256-nwlAzMkY1JdhLtes48VaNH9LS7GzqtPCwk2dZA/bGmQ=";
+  };
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 971b60085e82..7eb539ba12d7 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -17856,9 +17856,10 @@ with pkgs;
 
   flyway = callPackage ../development/tools/flyway { };
 
-  inherit (callPackages ../development/libraries/fmt { }) fmt_7 fmt_8;
+  inherit (callPackages ../development/libraries/fmt { }) fmt_7 fmt_8 fmt_9;
 
   fmt = fmt_7;
+  fmt_latest = fmt_9;
 
   fplll = callPackage ../development/libraries/fplll {};
   fplll_20160331 = callPackage ../development/libraries/fplll/20160331.nix {};