diff --git a/pkgs/development/python-modules/nbformat/default.nix b/pkgs/development/python-modules/nbformat/default.nix
index a3143780e1c7..a8e6993d6458 100644
--- a/pkgs/development/python-modules/nbformat/default.nix
+++ b/pkgs/development/python-modules/nbformat/default.nix
@@ -12,11 +12,11 @@
 
 buildPythonPackage rec {
   pname = "nbformat";
-  version = "5.1.2";
+  version = "5.1.3";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-HSI+ZKGL+nzfLbLpuoqBgxL8KgcB0ukQtY32aAk4WlY=";
+    sha256 = "b516788ad70771c6250977c1374fcca6edebe6126fd2adb5a69aa5c2356fd1c8";
   };
 
   LC_ALL="en_US.utf8";