diff --git a/pkgs/applications/networking/browsers/firefox/default.nix b/pkgs/applications/networking/browsers/firefox/default.nix
index 12d581b15666..6c8baad76213 100644
--- a/pkgs/applications/networking/browsers/firefox/default.nix
+++ b/pkgs/applications/networking/browsers/firefox/default.nix
@@ -143,8 +143,8 @@ in {
 
   firefox-esr = common {
     pname = "firefox-esr";
-    version = "38.2.1esr";
-    sha1 = "c596174e7273be5079bf55aecde33ec191d99538";
+    version = "38.3.0esr";
+    sha1 = "57d2c255348ac13b6ffbb952c5e0d57757aa0290";
   };
 
 }