diff --git a/pkgs/development/compilers/swi-prolog/default.nix b/pkgs/development/compilers/swi-prolog/default.nix
index 9245e59553fe..bbfea01fae4d 100644
--- a/pkgs/development/compilers/swi-prolog/default.nix
+++ b/pkgs/development/compilers/swi-prolog/default.nix
@@ -7,7 +7,7 @@
 }:
 
 let
-  version = "8.1.4";
+  version = "8.1.15";
   packInstall = swiplPath: pack:
     ''${swiplPath}/bin/swipl -g "pack_install(${pack}, [package_directory(\"${swiplPath}/lib/swipl/pack\"), silent(true), interactive(false)])." -t "halt."
     '';
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
   src = fetchgit {
     url = "https://github.com/SWI-Prolog/swipl-devel";
     rev = "V${version}";
-    sha256 = "0qxa6f5dypwczxajlf0l736adbjb17cbak3qsh5g04hpv2bxm6dh";
+    sha256 = "0czbrscx2s4079nmwvipp9cnwfny16m3fpnp823llm7wyljchgvq";
   };
 
   buildInputs = [ cacert git cmake gmp readline openssl