diff --git a/.ci.yaml b/.ci.yaml
index 3f0ead8483880..c2ec2c8c4a6d3 100644
--- a/.ci.yaml
+++ b/.ci.yaml
@@ -286,7 +286,7 @@ targets:
       dependencies: >-
         [
           {"dependency": "chrome_and_driver", "version": "version:107.0"},
-          {"dependency": "firefox", "version": "version:83.0"},
+          {"dependency": "firefox", "version": "version:106.0"},
           {"dependency": "goldctl", "version": "git_revision:3a77d0b12c697a840ca0c7705208e8622dc94603"}
         ]
     timeout: 60
diff --git a/lib/web_ui/dev/browser_lock.yaml b/lib/web_ui/dev/browser_lock.yaml
index 5666ba8df3f92..f5be6b4352c12 100644
--- a/lib/web_ui/dev/browser_lock.yaml
+++ b/lib/web_ui/dev/browser_lock.yaml
@@ -20,7 +20,7 @@ chrome:
   version: '107.0' # CIPD tag for the above Build IDs. Normally "ChromeMajorVersion.UploadAttempt". ;)
 
 firefox:
-  version: '83.0'
+  version: '106.0'
 
 edge:
   launcher_version: '1.2.0.0'