diff --git a/.changeset/remove-theme-dev-poll.md b/.changeset/remove-theme-dev-poll.md
new file mode 100644
index 00000000000..5a711d169ab
--- /dev/null
+++ b/.changeset/remove-theme-dev-poll.md
@@ -0,0 +1,5 @@
+---
+'@shopify/theme': major
+---
+
+Remove the `--poll` flag from `theme dev`. It has been deprecated since 3.61.0 and has had no effect since 3.70.0.
diff --git a/packages/cli/oclif.manifest.json b/packages/cli/oclif.manifest.json
index 7e272930ac8..de4515187fb 100644
--- a/packages/cli/oclif.manifest.json
+++ b/packages/cli/oclif.manifest.json
@@ -11082,14 +11082,6 @@
           "noCacheDefault": true,
           "type": "option"
         },
-        "poll": {
-          "allowNo": false,
-          "description": "Force polling to detect file changes.",
-          "env": "SHOPIFY_FLAG_POLL",
-          "hidden": true,
-          "name": "poll",
-          "type": "boolean"
-        },
         "port": {
           "description": "Local port to serve theme preview from. Must be between 1 and 65535.",
           "env": "SHOPIFY_FLAG_PORT",
diff --git a/packages/theme/src/cli/commands/theme/dev.ts b/packages/theme/src/cli/commands/theme/dev.ts
index 7bbd2231120..fd61f3dad63 100644
--- a/packages/theme/src/cli/commands/theme/dev.ts
+++ b/packages/theme/src/cli/commands/theme/dev.ts
@@ -72,11 +72,6 @@ You can run this command only in a directory that matches the [default Shopify t
       default: 'default',
       env: 'SHOPIFY_FLAG_ERROR_OVERLAY',
     }),
-    poll: Flags.boolean({
-      hidden: true,
-      description: 'Force polling to detect file changes.',
-      env: 'SHOPIFY_FLAG_POLL',
-    }),
     'theme-editor-sync': Flags.boolean({
       description: 'Synchronize Theme Editor updates in the local theme files.',
       env: 'SHOPIFY_FLAG_THEME_EDITOR_SYNC',