diff --git a/pkgs/development/tools/language-servers/nixd/default.nix b/pkgs/development/tools/language-servers/nixd/default.nix
index d5afaae1d81e..601a568554be 100644
--- a/pkgs/development/tools/language-servers/nixd/default.nix
+++ b/pkgs/development/tools/language-servers/nixd/default.nix
@@ -5,6 +5,7 @@
 , bison
 , boost182
 , flex
+, fmt
 , gtest
 , libbacktrace
 , lit
@@ -18,13 +19,13 @@
 
 stdenv.mkDerivation rec {
   pname = "nixd";
-  version = "1.2.2";
+  version = "1.2.3";
 
   src = fetchFromGitHub {
     owner = "nix-community";
     repo = "nixd";
     rev = version;
-    hash = "sha256-W44orkPZQ9gDUTogb8YVIaw4WHzUA+ExOXhTnZlJ6yY=";
+    hash = "sha256-i/z5VnsWPWloQfdk48i+a4XaGnTMPJ6QougChkT9IWw=";
   };
 
   mesonBuildType = "release";
@@ -45,6 +46,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     libbacktrace
     nix
+    fmt
     gtest
     boost182
     llvmPackages.llvm