diff --git a/pkgs/development/misc/newlib/default.nix b/pkgs/development/misc/newlib/default.nix
index e891cf39dc3a..3794b631f8ce 100644
--- a/pkgs/development/misc/newlib/default.nix
+++ b/pkgs/development/misc/newlib/default.nix
@@ -13,11 +13,11 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "newlib";
-  version = "4.4.0.20231231";
+  version = "4.5.0.20241231";
 
   src = fetchurl {
     url = "ftp://sourceware.org/pub/newlib/newlib-${finalAttrs.version}.tar.gz";
-    sha256 = "sha256-DBZqOeG/CVHfr81olJ/g5LbTZYCB1igvOa7vxjEPLxM=";
+    sha256 = "sha256-M/EmBeAFSWWZbCXBOCs+RjsK+ReZAB9buMBjDy7IyFI=";
   };
 
   patches = lib.optionals nanoizeNewlib [