diff --git a/pkgs/applications/version-management/nbstripout/default.nix b/pkgs/applications/version-management/nbstripout/default.nix
index 07f9b442a74..3bea6d89334 100644
--- a/pkgs/applications/version-management/nbstripout/default.nix
+++ b/pkgs/applications/version-management/nbstripout/default.nix
@@ -2,7 +2,7 @@
 
 with python.pkgs;
 buildPythonApplication rec {
-  version = "0.3.7";
+  version = "0.3.9";
   pname = "nbstripout";
 
   # Mercurial should be added as a build input but because it's a Python
@@ -14,7 +14,7 @@ buildPythonApplication rec {
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "13w2zhw8vrfv6637bw5ygygj1dky55fvvncz11hq0abwkkzb3wb2";
+    sha256 = "b46dddbf78b8b137176bc72729124e378242ef9ce93af63f6e0a8c4850c972e7";
   };
 
   # for some reason, darwin uses /bin/sh echo native instead of echo binary, so