diff --git a/pkgs/development/python-modules/readme_renderer/default.nix b/pkgs/development/python-modules/readme_renderer/default.nix
index d99829194939..138f99d16377 100644
--- a/pkgs/development/python-modules/readme_renderer/default.nix
+++ b/pkgs/development/python-modules/readme_renderer/default.nix
@@ -11,11 +11,11 @@
 
 buildPythonPackage rec {
   pname = "readme_renderer";
-  version = "17.4";
+  version = "18.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "82d68175feec897af2a38fe8590778f14c3be5324cc62e3ce5752a9b1e4b60ab";
+    sha256 = "e18cab7f1b07412990df1b59e1be04e1538f514a5bba53ec8777bfc5aac27563";
   };
 
   checkInputs = [ pytest ];