diff --git a/pkgs/applications/science/logic/z3/default.nix b/pkgs/applications/science/logic/z3/default.nix
index 28a7e783ff3f..a4a55e3e8511 100644
--- a/pkgs/applications/science/logic/z3/default.nix
+++ b/pkgs/applications/science/logic/z3/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   name = "z3-${version}";
-  version = "4.8.3";
+  version = "4.8.4";
 
   src = fetchFromGitHub {
     owner  = "Z3Prover";
     repo   = "z3";
     rev    = name;
-    sha256 = "0p5gdmhd32x6zwmx7j5cgwh4jyfxa9yapym95nlmyfaqzak92qar";
+    sha256 = "014igqm5vwswz0yhz0cdxsj3a6dh7i79hvhgc3jmmmz3z0xm1gyn";
   };
 
   buildInputs = [ python fixDarwinDylibNames ];