diff --git a/pkgs/applications/science/logic/prooftree/default.nix b/pkgs/applications/science/logic/prooftree/default.nix
index d0d95818ff93..ce8badf8f653 100644
--- a/pkgs/applications/science/logic/prooftree/default.nix
+++ b/pkgs/applications/science/logic/prooftree/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "prooftree";
-  version = "0.13";
+  version = "0.14";
 
   src = fetchurl {
     url = "https://askra.de/software/prooftree/releases/prooftree-${version}.tar.gz";
-    sha256 = "0z1z4wqbqwgppkh2bm89fgy07a0y2m6g4lvcyzs09sm1ysklk2dh";
+    sha256 = "sha256-nekV2UnjibOk4h0jZ1jV7W5pE/hXWb3fUoLTJb3Jzc0=";
   };
 
   strictDeps = true;