diff --git a/pkgs/development/python-modules/nbformat/default.nix b/pkgs/development/python-modules/nbformat/default.nix
index 3bd119179a4..a3143780e1c 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 = "5.0.8";
+  version = "5.1.2";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "f545b22138865bfbcc6b1ffe89ed5a2b8e2dc5d4fe876f2ca60d8e6f702a30f8";
+    sha256 = "sha256-HSI+ZKGL+nzfLbLpuoqBgxL8KgcB0ukQtY32aAk4WlY=";
   };
 
   LC_ALL="en_US.utf8";