diff --git a/pkgs/development/libraries/lightgbm/default.nix b/pkgs/development/libraries/lightgbm/default.nix
index 86c85e66ace2..4aa28f6461e1 100644
--- a/pkgs/development/libraries/lightgbm/default.nix
+++ b/pkgs/development/libraries/lightgbm/default.nix
@@ -23,14 +23,14 @@ stdenv.mkDerivation rec {
   #   in \
   #   rWrapper.override{ packages = [ lgbm ]; }"
   pname = lib.optionalString rLibrary "r-" + pnameBase;
-  version = "4.4.0";
+  version = "4.5.0";
 
   src = fetchFromGitHub {
     owner = "microsoft";
     repo = pnameBase;
     rev = "v${version}";
     fetchSubmodules = true;
-    hash = "sha256-i4mtJwSwnbGMXVfQ8a9jZZPUBBibXyQPgMVJ3uXxeGQ=";
+    hash = "sha256-nST6+/c3Y4/hqwgEUhx03gWtjxhlmUu1XKDCy2pSsvU=";
   };
 
   nativeBuildInputs = [ cmake ]
@@ -109,7 +109,7 @@ stdenv.mkDerivation rec {
       mkdir -p $out/lib
       mkdir -p $out/bin
       cp -r ../include $out
-      install -Dm755 ../lib_lightgbm.so $out/lib/lib_lightgbm.so
+      install -Dm755 ../lib_lightgbm${stdenv.hostPlatform.extensions.sharedLibrary} $out/lib/lib_lightgbm${stdenv.hostPlatform.extensions.sharedLibrary}
     '' + lib.optionalString (!rLibrary && !pythonLibrary) ''
       install -Dm755 ../lightgbm $out/bin/lightgbm
     '' + lib.optionalString javaWrapper ''