diff --git a/pkgs/development/python-modules/metar/default.nix b/pkgs/development/python-modules/metar/default.nix
index e832c7cf56fe..4a7bf9edc5ae 100644
--- a/pkgs/development/python-modules/metar/default.nix
+++ b/pkgs/development/python-modules/metar/default.nix
@@ -6,13 +6,13 @@
 
 buildPythonPackage rec {
   pname = "metar";
-  version = "1.8.0";
+  version = "1.9.0";
 
   src = fetchFromGitHub {
     owner = "python-metar";
     repo = "python-metar";
     rev = "v${version}";
-    sha256 = "019vfq9191cdvvq1afdcdgdgbzpj7wq6pz9li8ggim71azjnv5nn";
+    sha256 = "sha256-pl2NWRfFCYyM2qvBt4Ic3wgbGkYZvAO6pX2Set8zYW8=";
   };
 
   checkInputs = [ pytestCheckHook ];