diff --git a/.hgtags b/.hgtags
index 4a3161fe0311f..ebb2f8403d5fc 100644
--- a/.hgtags
+++ b/.hgtags
@@ -229,3 +229,5 @@ b81970e39db444fa9a70eaf2e656f3e48c18a7c1 FIREFOX_BETA_97_BASE
 c0ed4893120fe99dabf73c109dc77bdf109ae628 FIREFOX_NIGHTLY_98_END
 b20c5a948aaf5c9b8ca0819ff6d8ab83d0a0af8b FIREFOX_BETA_99_BASE
 923f64ad8d51a0ba1540c400bb6ee63cbe1233c4 FIREFOX_NIGHTLY_99_END
+8ab1c4f5058874d87bd1aefafbcc6a20b994f775 FIREFOX_BETA_100_BASE
+1ce63246334ec627d74c38d7acd5b858c781336a FIREFOX_NIGHTLY_100_END
diff --git a/CLOBBER b/CLOBBER
index d4cdfaff33de3..92d152a067d58 100644
--- a/CLOBBER
+++ b/CLOBBER
@@ -22,4 +22,4 @@
 # changes to stick? As of bug 928195, this shouldn't be necessary! Please
 # don't change CLOBBER for WebIDL changes any more.
 
-Merge day clobber
\ No newline at end of file
+Merge day clobber 2022-04-04
\ No newline at end of file
diff --git a/browser/config/version.txt b/browser/config/version.txt
index fef6e2b262ada..379bc71cfd9f7 100644
--- a/browser/config/version.txt
+++ b/browser/config/version.txt
@@ -1 +1 @@
-100.0a1
+101.0a1
diff --git a/browser/config/version_display.txt b/browser/config/version_display.txt
index fef6e2b262ada..379bc71cfd9f7 100644
--- a/browser/config/version_display.txt
+++ b/browser/config/version_display.txt
@@ -1 +1 @@
-100.0a1
+101.0a1
diff --git a/browser/locales/l10n-changesets.json b/browser/locales/l10n-changesets.json
index fa107c2e4f6d4..466c85123a542 100644
--- a/browser/locales/l10n-changesets.json
+++ b/browser/locales/l10n-changesets.json
@@ -339,7 +339,7 @@
             "win64-aarch64-devedition",
             "win64-devedition"
         ],
-        "revision": "a12077361d0bacacecfb4adc5bc50b313fb40f23"
+        "revision": "9a0cfe023125d6a5d3d478f695a1b36fa38a5d1b"
     },
     "da": {
         "pin": false,
@@ -375,7 +375,7 @@
             "win64-aarch64-devedition",
             "win64-devedition"
         ],
-        "revision": "0c6b3bb36b9589c3a2241985e9ec7e157276f7bb"
+        "revision": "3434414ac67d60e4c304d4b4260d148c0eb4ebd8"
     },
     "dsb": {
         "pin": false,
@@ -645,7 +645,7 @@
             "win64-aarch64-devedition",
             "win64-devedition"
         ],
-        "revision": "756f9d22d9a7b15abf165453a7763d4249d27b6f"
+        "revision": "ac3fb8e0764db89c9ee712ddc2c48a4251b70b4f"
     },
     "fy-NL": {
         "pin": false,
@@ -735,7 +735,7 @@
             "win64-aarch64-devedition",
             "win64-devedition"
         ],
-        "revision": "b63fc77fa8a77d85975b2dd770c28542c092c644"
+        "revision": "c922e2880276aefb0dde2ed6910880e36201045a"
     },
     "gu-IN": {
         "pin": false,
@@ -825,7 +825,7 @@
             "win64-aarch64-devedition",
             "win64-devedition"
         ],
-        "revision": "2ae63bb924722521b512abd552442a2f7e882683"
+        "revision": "bffd5a9358841439c82e3540d0198bd213dfb6e8"
     },
     "hu": {
         "pin": false,
@@ -843,7 +843,7 @@
             "win64-aarch64-devedition",
             "win64-devedition"
         ],
-        "revision": "25e59f917cf80e2de51aa5bb6b60ec17414fa4de"
+        "revision": "80db3824c61a440330d94034a18f6a155260d08d"
     },
     "hy-AM": {
         "pin": false,
@@ -879,7 +879,7 @@
             "win64-aarch64-devedition",
             "win64-devedition"
         ],
-        "revision": "88e8e6c50db6a2fa455cafdb9c2af9f2c13a2bf1"
+        "revision": "d11150e5231ff950cee977e6fa4d16a6901ed4a4"
     },
     "ia": {
         "pin": false,
@@ -1317,7 +1317,7 @@
             "win64-aarch64-devedition",
             "win64-devedition"
         ],
-        "revision": "fc3e36ce8db7e5c480f499efbb3e4b16ee320d59"
+        "revision": "a5a4c5c343b34eaddd85504708211c4d007ba7c4"
     },
     "nn-NO": {
         "pin": false,
@@ -1353,7 +1353,7 @@
             "win64-aarch64-devedition",
             "win64-devedition"
         ],
-        "revision": "e2b26f7a25942c59cf3742dcdf99ac8ec7fc1a7a"
+        "revision": "c463f9571156f807c8607e65cc8738d28dc027cc"
     },
     "pa-IN": {
         "pin": false,
@@ -1425,7 +1425,7 @@
             "win64-aarch64-devedition",
             "win64-devedition"
         ],
-        "revision": "9d27949e23309d6f3950270ec84ea5fae2102d25"
+        "revision": "e3adf4b215edf04b83e84cc9fb21f99b24df5efd"
     },
     "rm": {
         "pin": false,
@@ -1587,7 +1587,7 @@
             "win64-aarch64-devedition",
             "win64-devedition"
         ],
-        "revision": "5500f9a3734c8a5d31debe6c438b2c44d743afa5"
+        "revision": "34d79da7403c2c0208b21bf0d71e2905f1688ac7"
     },
     "sl": {
         "pin": false,
@@ -1749,7 +1749,7 @@
             "win64-aarch64-devedition",
             "win64-devedition"
         ],
-        "revision": "f92abe7e5dbbda84968ba79841f1bc08f502e303"
+        "revision": "7b8e4eae30b839dbd92a65d3ac4283d13ca113f2"
     },
     "th": {
         "pin": false,
diff --git a/config/milestone.txt b/config/milestone.txt
index b0119374907cc..689995912eb58 100644
--- a/config/milestone.txt
+++ b/config/milestone.txt
@@ -10,4 +10,4 @@
 # hardcoded milestones in the tree from these two files.
 #--------------------------------------------------------
 
-100.0a1
+101.0a1
diff --git a/services/sync/modules/constants.js b/services/sync/modules/constants.js
index a0d1620f915f7..bf4025ae6e0a9 100644
--- a/services/sync/modules/constants.js
+++ b/services/sync/modules/constants.js
@@ -7,7 +7,7 @@ var EXPORTED_SYMBOLS = [];
 for (let [key, val] of Object.entries({
   // Don't manually modify this line, as it is automatically replaced on merge day
   // by the gecko_migration.py script.
-  WEAVE_VERSION: "1.102.0",
+  WEAVE_VERSION: "1.103.0",
 
   // Sync Server API version that the client supports.
   SYNC_API_VERSION: "1.5",
diff --git a/xpcom/components/Module.h b/xpcom/components/Module.h
index de8730f3c2ff9..fcdfb39974a13 100644
--- a/xpcom/components/Module.h
+++ b/xpcom/components/Module.h
@@ -21,7 +21,7 @@ namespace mozilla {
  * via a module loader.
  */
 struct Module {
-  static const unsigned int kVersion = 100;
+  static const unsigned int kVersion = 101;
 
   struct CIDEntry;