diff --git a/pkgs/applications/misc/kitty/default.nix b/pkgs/applications/misc/kitty/default.nix
index 70b580cd0f8a..4febac10806f 100644
--- a/pkgs/applications/misc/kitty/default.nix
+++ b/pkgs/applications/misc/kitty/default.nix
@@ -7,7 +7,7 @@
 
 with python3Packages;
 buildPythonApplication rec {
-  version = "0.12.0";
+  version = "0.12.3";
   name = "kitty-${version}";
   format = "other";
 
@@ -15,7 +15,7 @@ buildPythonApplication rec {
     owner = "kovidgoyal";
     repo = "kitty";
     rev = "v${version}";
-    sha256 = "1n2pi9pc903inls1fvz257q7wpif76rj394qkgq7pixpisijdyjm";
+    sha256 = "1nhk8pbwr673gw9qjgca4lzjgp8rw7sf99ra4wsh8jplf3kvgq5c";
   };
 
   buildInputs = [
@@ -33,8 +33,8 @@ buildPythonApplication rec {
       --replace "find_library('startup-notification-1')" "'${libstartup_notification}/lib/libstartup-notification-1.so'"
 
     substituteInPlace docs/Makefile \
-      --replace 'python3 .. +launch $(shell which sphinx-build)' \
-                'PYTHONPATH=$PYTHONPATH:.. HOME=$TMPDIR/nowhere $(shell which sphinx-build)'
+      --replace 'python3 .. +launch :sphinx-build' \
+                'PYTHONPATH=$PYTHONPATH:.. HOME=$TMPDIR/nowhere sphinx-build'
     '';
 
   buildPhase = ''