diff --git a/pkgs/development/libraries/simgear/default.nix b/pkgs/development/libraries/simgear/default.nix
index c24c336c728..2d6f6ef8d29 100644
--- a/pkgs/development/libraries/simgear/default.nix
+++ b/pkgs/development/libraries/simgear/default.nix
@@ -4,7 +4,7 @@
 , curl
 }:
 let
-  version = "2020.3.12";
+  version = "2020.3.13";
   shortVersion = builtins.substring 0 6 version;
 in
 stdenv.mkDerivation rec {
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "mirror://sourceforge/flightgear/release-${shortVersion}/${pname}-${version}.tar.bz2";
-    sha256 = "sha256-W7KZzFU5qZE6tOv9YSzH3yoNi8YET2yzmThMcl23140=";
+    sha256 = "sha256-3AmQb9qLGBD+LLIrX1Fx0gi6kBxbnTkLrW0fP9ZsUeg=";
   };
 
   nativeBuildInputs = [ cmake ];