diff --git a/pkgs/development/python-modules/coveralls/default.nix b/pkgs/development/python-modules/coveralls/default.nix
index 0c16d2d9aca2..72e8f6d45a72 100644
--- a/pkgs/development/python-modules/coveralls/default.nix
+++ b/pkgs/development/python-modules/coveralls/default.nix
@@ -16,13 +16,13 @@
 
 buildPythonPackage rec {
   pname = "coveralls";
-  version = "3.2.0";
+  version = "3.3.1";
   disabled = isPy27;
 
   # wanted by tests
   src = fetchPypi {
     inherit pname version;
-    sha256 = "15a987d9df877fff44cd81948c5806ffb6eafb757b3443f737888358e96156ee";
+    sha256 = "b32a8bb5d2df585207c119d6c01567b81fba690c9c10a753bfe27a335bfc43ea";
   };
 
   checkInputs = [