diff --git a/pkgs/development/libraries/libdatovka/default.nix b/pkgs/development/libraries/libdatovka/default.nix
index a6744c23e1d3..89ce56fe6bb8 100644
--- a/pkgs/development/libraries/libdatovka/default.nix
+++ b/pkgs/development/libraries/libdatovka/default.nix
@@ -15,11 +15,11 @@
 
 stdenv.mkDerivation rec {
   pname = "libdatovka";
-  version = "0.3.0";
+  version = "0.4.0";
 
   src = fetchurl {
     url = "https://gitlab.nic.cz/datovka/libdatovka/-/archive/v${version}/libdatovka-v${version}.tar.gz";
-    sha256 = "sha256-aG7U8jP3pvOeFDetYVOx+cE78ys0uSkKNjSgB09ste8=";
+    sha256 = "sha256-EqCS77MpjfR0Td07WKB7jWRBxAoKRtbAgyyThFOJXL8=";
   };
 
   patches = [