diff --git a/pkgs/development/libraries/wt/default.nix b/pkgs/development/libraries/wt/default.nix
index e1c339d1e0fe..74117b3a2981 100644
--- a/pkgs/development/libraries/wt/default.nix
+++ b/pkgs/development/libraries/wt/default.nix
@@ -34,7 +34,7 @@ let
       ];
 
       meta = with stdenv.lib; {
-        homepage = https://www.webtoolkit.eu/wt;
+        homepage = "https://www.webtoolkit.eu/wt";
         description = "C++ library for developing web applications";
         platforms = platforms.linux;
         license = licenses.gpl2;
@@ -43,8 +43,8 @@ let
     };
 in {
   wt3 = generic {
-    version = "3.3.11";
-    sha256 = "1s1bwg3s7brnspr9ya1vg5mr29dbvhf05s606fiv409b7ladqvxq";
+    version = "3.4.0";
+    sha256 = "0y0b2h9jf5cg1gdh48dj32pj5nsvipab1cgygncxf98c46ikhysg";
   };
 
   wt4 = generic {