diff --git a/pkgs/development/compilers/gcc/7/default.nix b/pkgs/development/compilers/gcc/7/default.nix
index 9ce3808b73f..0e5f69c2726 100644
--- a/pkgs/development/compilers/gcc/7/default.nix
+++ b/pkgs/development/compilers/gcc/7/default.nix
@@ -56,7 +56,7 @@ assert langGo -> langCC;
 with stdenv.lib;
 with builtins;
 
-let version = "7.2.0";
+let version = "7.3.0";
 
     # Whether building a cross-compiler for GNU/Hurd.
     crossGNU = targetPlatform != hostPlatform && targetPlatform.config == "i586-pc-gnu";
@@ -185,7 +185,7 @@ stdenv.mkDerivation ({
 
   src = fetchurl {
     url = "mirror://gcc/releases/gcc-${version}/gcc-${version}.tar.xz";
-    sha256 = "16j7i0888j2f1yp9l0nhji6cq65dy6y4nwy8868a8njbzzwavxqw";
+    sha256 = "0p71bij6bfhzyrs8676a8jmpjsfz392s2rg862sdnsk30jpacb43";
   };
 
   inherit patches;