diff --git a/pkgs/development/libraries/poco/default.nix b/pkgs/development/libraries/poco/default.nix
index e69ed0236f4..ecd20d545d5 100644
--- a/pkgs/development/libraries/poco/default.nix
+++ b/pkgs/development/libraries/poco/default.nix
@@ -3,11 +3,11 @@
 stdenv.mkDerivation rec {
   pname = "poco";
 
-  version = "1.9.2";
+  version = "1.9.4";
 
   src = fetchurl {
     url = "https://pocoproject.org/releases/${pname}-${version}/${pname}-${version}-all.tar.gz";
-    sha256 = "0jkbxw6z8l7zpr7bh2xcyzk8a5apzyz4ranhl66gxna1ay0gpzvd";
+    sha256 = "0xzxi3r4v2076kcxhj7b1achma2lqy01spshxq8sfh0jn5bz4d7b";
   };
 
   nativeBuildInputs = [ cmake pkgconfig ];