diff --git a/ruby-gem/spec/dummy/package.json b/ruby-gem/spec/dummy/package.json
index 58384e118..502f7b05d 100644
--- a/ruby-gem/spec/dummy/package.json
+++ b/ruby-gem/spec/dummy/package.json
@@ -20,7 +20,7 @@
     "@babel/preset-react": "^7.26.3",
     "@babel/runtime": "7",
     "@kaspernj/api-maker": "1.0.450",
-    "@rails/actioncable": "^7.2.200",
+    "@rails/actioncable": "^8.0.100",
     "babel-loader": "9",
     "babel-plugin-dynamic-import-node": "^2.3.3",
     "babel-plugin-macros": "^3.1.0",
diff --git a/ruby-gem/spec/dummy/yarn.lock b/ruby-gem/spec/dummy/yarn.lock
index 1cd2bc7d8..85348db00 100644
--- a/ruby-gem/spec/dummy/yarn.lock
+++ b/ruby-gem/spec/dummy/yarn.lock
@@ -1349,10 +1349,10 @@
     "@parcel/watcher-win32-ia32" "2.4.1"
     "@parcel/watcher-win32-x64" "2.4.1"
 
-"@rails/actioncable@^7.2.200":
-  version "7.2.200"
-  resolved "https://registry.yarnpkg.com/@rails/actioncable/-/actioncable-7.2.200.tgz#7f56b3313762dbb85b64490aa33c5f431419aafd"
-  integrity sha512-gVmi3MabEa+Bkatvw0/k1Y3WTidcIf3qNbb9L8qc+AmT2UmkVqUZhJpSLvKmH10twCYIGzn7yySW/lOpg81Duw==
+"@rails/actioncable@^8.0.100":
+  version "8.0.100"
+  resolved "https://registry.yarnpkg.com/@rails/actioncable/-/actioncable-8.0.100.tgz#83733a8fa35be5d085cf0fe10b341d0428022bc0"
+  integrity sha512-/vXTG6gzSW0CDqmA0hWasZ1UAGZC7g5NGM21jowh58rCCeTHAGbWwKExHn49VDuYXz+cHbL4MGfc5LMdTp9m3A==
 
 "@react-native/normalize-colors@^0.74.1":
   version "0.74.81"