--- a/taskcluster/ci/release-update-verify-config/kind.yml
+++ b/taskcluster/ci/release-update-verify-config/kind.yml
@@ -47,19 +47,25 @@ job-defaults:
         # is behind a watershed
         include-version:
             by-project:
                 try-comm-central: beta
                 comm-beta: beta
                 default: beta
         last-watershed:
             by-project:
-                comm-beta: "56.0b3"
+                comm-beta:
+                    by-build-platform:
+                        win64.*: "60.0b7"
+                        default: "56.0b3"
                 comm-esr60: "60.0esr"
-                try-comm-central: "56.0b3"
+                try-comm-central: 
+                    by-build-platform:
+                        win64.*: "60.0b7"
+                        default: "56.0b3"
                 default: null
 
 jobs:
     thunderbird-linux:
         shipping-product: thunderbird
         treeherder:
             symbol: UVC
             platform: linux32/opt
@@ -122,16 +128,40 @@ jobs:
                     comm-beta: "beta-localtest"
                     default: "default"
             mar-channel-id-override:
                 by-project:
                     comm-beta: beta
                     try-comm-central: beta
                     default: null
 
+    thunderbird-win64:
+        shipping-product: thunderbird
+        treeherder:
+            symbol: UVC
+            platform: windows2012-64/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: win64-nightly
+        extra:
+            product: thunderbird
+            platform: win64
+            updater-platform: linux-x86_64
+            channel:
+                by-project:
+                    comm-beta: "beta-localtest"
+                    try-comm-central: "beta-localtest"
+                    default: "default"
+            mar-channel-id-override:
+                by-project:
+                    comm-beta: beta
+                    try-comm-central: beta
+                    default: null
+
     thunderbird-win32:
         shipping-product: thunderbird
         treeherder:
             symbol: UVC
             platform: windows2012-32/opt
             kind: test
             tier: 1
         attributes:

--- a/taskcluster/ci/release-update-verify/kind.yml
+++ b/taskcluster/ci/release-update-verify/kind.yml
@@ -61,16 +61,27 @@ jobs:
         treeherder:
             symbol: UV(UV)
             platform: linux32/opt
             kind: test
             tier: 1
         attributes:
             build_platform: linux-nightly
 
+    thunderbird-win64:
+        description: win64 update verify
+        shipping-product: thunderbird
+        treeherder:
+            symbol: UV(UV)
+            platform: windows2012-64/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: win64-nightly
+
     thunderbird-win32:
         description: win32 update verify
         shipping-product: thunderbird
         treeherder:
             symbol: UV(UV)
             platform: windows2012-32/opt
             kind: test
             tier: 1