diff --git a/pkgs/applications/networking/jnetmap/default.nix b/pkgs/applications/networking/jnetmap/default.nix
index 2a686fdd8b9e..8aea49decb7e 100644
--- a/pkgs/applications/networking/jnetmap/default.nix
+++ b/pkgs/applications/networking/jnetmap/default.nix
@@ -2,11 +2,12 @@
 
 stdenv.mkDerivation rec {
   pname = "jnetmap";
-  version = "0.5.4";
+  version = "0.5.5";
+  versionSuffix = "-703";
 
   src = fetchurl {
-    url = "mirror://sourceforge/project/jnetmap/jNetMap%20${version}/jNetMap-${version}.jar";
-    sha256 = "0nxsfa600jhazwbabxmr9j37mhwysp0fyrvczhv3f1smiy8rjanl";
+    url = "mirror://sourceforge/project/jnetmap/jNetMap%20${version}/jNetMap-${version}${versionSuffix}.jar";
+    sha256 = "sha256-e4Ssm2Sq/v1YZ7ZudAqgQ7Cz2ffwWbSmLFoKhaZvTPg=";
   };
 
   nativeBuildInputs = [ makeWrapper ];
@@ -15,12 +16,16 @@ stdenv.mkDerivation rec {
   dontUnpack = true;
 
   installPhase = ''
+    runHook preInstall
+
     mkdir -p "$out/bin"
     mkdir -p "$out/lib"
 
     cp "${src}" "$out/lib/jnetmap.jar"
     makeWrapper "${jre}/bin/java" "$out/bin/jnetmap" \
         --add-flags "-jar \"$out/lib/jnetmap.jar\""
+
+    runHook postInstall
   '';
 
   meta = with lib; {