diff --git a/pkgs/development/libraries/wt/default.nix b/pkgs/development/libraries/wt/default.nix
index 74792f8f34cd..7c819487a334 100644
--- a/pkgs/development/libraries/wt/default.nix
+++ b/pkgs/development/libraries/wt/default.nix
@@ -49,12 +49,12 @@ let
     };
 in {
   wt3 = generic {
-    version = "3.4.2";
-    sha256 = "03mwr4yv3705y74pdh19lmh8szad6gk2x2m23f4pr0wrmqg73307";
+    version = "3.5.0";
+    sha256 = "1xcwzldbval5zrf7f3n2gkpscagg51cw2jp6p3q1yh6bi59haida";
   };
 
   wt4 = generic {
-    version = "4.1.2";
-    sha256 = "06bnadpgflg8inikzynnz4l4r6w1bphjwlva4pzf51w648vpkknl";
+    version = "4.2.0";
+    sha256 = "0zrrdjz0sa8hrmybjp4aap1lcqcqvsicd7dj49zj1m5k8gnfpm4v";
   };
 }