diff --git a/pkgs/development/interpreters/pure/default.nix b/pkgs/development/interpreters/pure/default.nix
index bfa47693de0c..2860aceb383b 100644
--- a/pkgs/development/interpreters/pure/default.nix
+++ b/pkgs/development/interpreters/pure/default.nix
@@ -4,13 +4,13 @@
 stdenv.mkDerivation rec {
   baseName="pure";
   project="pure-lang";
-  version="0.63";
+  version="0.64";
   name="${baseName}-${version}";
   extension="tar.gz";
 
   src = fetchurl {
     url="https://bitbucket.org/purelang/${project}/downloads/${name}.${extension}";
-    sha256="33acb2d560b21813f5e856973b493d9cfafba82bd6f539425ce07aa22f84ee29";
+    sha256="01vvix302gh5vsmnjf2g0rrif3hl1yik4izsx1wrvv1a6hlm5mgg";
   };
 
   buildInputs = [ bison flex makeWrapper ];
@@ -36,4 +36,4 @@ stdenv.mkDerivation rec {
       linux;
     license = lib.licenses.gpl3Plus;
   };
-}
\ No newline at end of file
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 593a23953196..4d8e714554b3 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4592,7 +4592,9 @@ let
 
   polyml = callPackage ../development/compilers/polyml { };
 
-  pure = callPackage ../development/interpreters/pure { };
+  pure = callPackage ../development/interpreters/pure {
+    llvm = llvm_35;
+  };
   pure-gsl = callPackage ../development/pure-modules/pure-gsl { };
 
   python = python2;