diff --git a/pkgs/applications/networking/browsers/firefox/default.nix b/pkgs/applications/networking/browsers/firefox/default.nix
index f281b51fbfd..834c6ed339c 100644
--- a/pkgs/applications/networking/browsers/firefox/default.nix
+++ b/pkgs/applications/networking/browsers/firefox/default.nix
@@ -139,8 +139,8 @@ in {
 
   firefox-esr-unwrapped = common {
     pname = "firefox-esr";
-    version = "38.5.2esr";
-    sha256 = "0xqirpiys2pgzk9hs4s93svknc0sss8ry60zar7n9jj74cgz590m";
+    version = "38.6.1esr";
+    sha256 = "1zyhzczhknplxfmk2r7cczavbsml8ckyimibj2sphwdc300ls5wi";
   };
 
 }