diff --git a/pkgs/development/python-modules/pymc3/default.nix b/pkgs/development/python-modules/pymc3/default.nix
index 5af6ef992289..ebf852c09a48 100644
--- a/pkgs/development/python-modules/pymc3/default.nix
+++ b/pkgs/development/python-modules/pymc3/default.nix
@@ -16,12 +16,12 @@
 
 buildPythonPackage rec {
   pname = "pymc3";
-  version = "3.4.1";
+  version = "3.5";
   disabled = pythonOlder "3.5";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "b8fe2a1ca142674f1b5cbed05a0a54ce9dade5998370005ddcea349472e7fe2d";
+    sha256 = "6088e683c6d730bb21350a0f54ee083fa5a28e4d5ef52d57878141c9c20f21ee";
   };
 
   # No need for coverage stats in Nix builds