--- a/.gecko_rev.yml
+++ b/.gecko_rev.yml
@@ -1,13 +1,13 @@
 ---
 GECKO_BASE_REPOSITORY: https://hg.mozilla.org/mozilla-unified
 GECKO_HEAD_REPOSITORY: https://hg.mozilla.org/releases/mozilla-beta
-GECKO_HEAD_REF: FIREFOX_83_0b9_RELEASE
-GECKO_HEAD_REV: 0d63af20a6f2bbc6194d0911177cc637a519d05a
+GECKO_HEAD_REF: FIREFOX_83_0b10_BUILD1
+GECKO_HEAD_REV: f1da4198e696bbeb7c96e22ce1427655a173b243
 
 ### For comm-central
 # GECKO_BASE_REPOSITORY: https://hg.mozilla.org/mozilla-unified
 # GECKO_HEAD_REPOSITORY: https://hg.mozilla.org/mozilla-central
 # GECKO_HEAD_REF: default
 #
 ### For branches
 # GECKO_BASE_REPOSITORY: https://hg.mozilla.org/mozilla-unified