diff --git a/pkgs/development/libraries/science/astronomy/stellarsolver/default.nix b/pkgs/development/libraries/science/astronomy/stellarsolver/default.nix
index 191751993c3a..bd610383f4f3 100644
--- a/pkgs/development/libraries/science/astronomy/stellarsolver/default.nix
+++ b/pkgs/development/libraries/science/astronomy/stellarsolver/default.nix
@@ -3,13 +3,13 @@
 
 mkDerivation rec {
   pname = "stellarsolver";
-  version = "1.8";
+  version = "1.9";
 
   src = fetchFromGitHub {
     owner = "rlancaste";
     repo = pname;
     rev = version;
-    sha256 = "sha256-eC45V0aqFSUVJrxhaEXFzgzaXkHVwA5Yj8YyGvii0QI=";
+    sha256 = "sha256-PiRXNiemJ+UjVhmd2KPcTKJoDW9K9QBf62nkP1LlOfw=";
   };
 
   nativeBuildInputs = [ cmake ];