diff --git a/pkgs/applications/misc/clight/default.nix b/pkgs/applications/misc/clight/default.nix
index 3592de5f1c6..4ca37673fee 100644
--- a/pkgs/applications/misc/clight/default.nix
+++ b/pkgs/applications/misc/clight/default.nix
@@ -6,13 +6,13 @@
 
 stdenv.mkDerivation rec {
   pname = "clight";
-  version = "4.8";
+  version = "4.9";
 
   src = fetchFromGitHub {
     owner = "FedeDP";
     repo = "Clight";
     rev = version;
-    sha256 = "sha256-nDI5Rq1iPVkj25HRpxmS9zxNDUy+9YsSwbZnEwYt86E=";
+    sha256 = "sha256-m1oKjyy7fMK6mIf5FRuWCbfAM8qlHXRR/rwHsCZADiY=";
   };
 
   # dbus-1.pc has datadir=/etc