diff --git a/pkgs/applications/science/astronomy/calcmysky/default.nix b/pkgs/applications/science/astronomy/calcmysky/default.nix
index 528fc74394f8..83d98590828d 100644
--- a/pkgs/applications/science/astronomy/calcmysky/default.nix
+++ b/pkgs/applications/science/astronomy/calcmysky/default.nix
@@ -10,13 +10,13 @@
 
 stdenv.mkDerivation rec {
   pname = "calcmysky";
-  version = "0.1.0";
+  version = "0.2.1";
 
   src = fetchFromGitHub {
     owner = "10110111";
     repo = "CalcMySky";
     rev = "v${version}";
-    hash = "sha256-0tHxHek4wqJKLl54zF7wDYN+UPL2y35/YAb6Dtg4k48=";
+    hash = "sha256-7Yj6OlZ7weenekXYGhK5EWcME20oCHiLPOxz5KEuKy4=";
   };
 
   nativeBuildInputs = [ cmake wrapQtAppsHook ];