diff --git a/docs/guides/migration-guides.md b/docs/guides/migration-guides.md
index 46845cfde..33f8804a0 100644
--- a/docs/guides/migration-guides.md
+++ b/docs/guides/migration-guides.md
@@ -21,6 +21,8 @@ These cover all the major Uppy versions and how to migrate to them.
 
 ### `@uppy/companion-client`
 
+- `supportsRefreshToken` now defaults to `false` instead of `true`. If you have
+  implemented a custom provider, this might affect you.
 - `Socket` class is no longer in use and has been removed. Unless you used this
   class you don’t need to do anything.
 
diff --git a/packages/@uppy/companion-client/src/Provider.ts b/packages/@uppy/companion-client/src/Provider.ts
index aad0ef42e..df87b9c17 100644
--- a/packages/@uppy/companion-client/src/Provider.ts
+++ b/packages/@uppy/companion-client/src/Provider.ts
@@ -87,7 +87,7 @@ export default class Provider<M extends Meta, B extends Body>
     this.tokenKey = `companion-${this.pluginId}-auth-token`
     this.companionKeysParams = this.opts.companionKeysParams
     this.preAuthToken = null
-    this.supportsRefreshToken = opts.supportsRefreshToken ?? true // todo false in next major
+    this.supportsRefreshToken = !!opts.supportsRefreshToken
   }
 
   async headers(): Promise<Record<string, string>> {