diff --git a/nongnu/packages/mozilla.scm b/nongnu/packages/mozilla.scm
index 2a0502a..23aedca 100644
--- a/nongnu/packages/mozilla.scm
+++ b/nongnu/packages/mozilla.scm
@@ -532,20 +532,20 @@ MOZ_ENABLE_WAYLAND=1 exec ~a $@\n"
 
 ;; Update this id with every firefox update to its release date.
 ;; It's used for cache validation and therefore can lead to strange bugs.
-(define %firefox-build-id "20231106222410")
+(define %firefox-build-id "20231120133139")
 
 (define-public firefox
   (package
     (inherit firefox-esr)
     (name "firefox")
-    (version "119.0.1")
+    (version "120.0")
     (source
      (origin
        (method url-fetch)
        (uri (string-append "https://archive.mozilla.org/pub/firefox/releases/"
                            version "/source/firefox-" version ".source.tar.xz"))
        (sha256
-        (base32 "0w3zn35s4lak884f8xvy3fwyfxx127sifxm1x5kp9sb0n3547k28"))))
+        (base32 "0x5myq36k3fmvidp6kwq4yh5hj15awndapwzr99xlkh7063ha477"))))
     (arguments
      (substitute-keyword-arguments (package-arguments firefox-esr)
        ((#:phases phases)