diff --git a/pkgs/development/interpreters/pure/default.nix b/pkgs/development/interpreters/pure/default.nix
index c471a3cdc0fb..133329f4f203 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="0.64";
+  version="0.66";
   name="${baseName}-${version}";
   extension="tar.gz";
 
   src = fetchurl {
     url="https://bitbucket.org/purelang/${project}/downloads/${name}.${extension}";
-    sha256="01vvix302gh5vsmnjf2g0rrif3hl1yik4izsx1wrvv1a6hlm5mgg";
+    sha256="42df6832476e8bee3a7ca179671284c1edd7bc82b71062fa0de62fd2117ee676";
   };
 
   buildInputs = [ bison flex makeWrapper ];