diff --git a/pubspec.lock b/pubspec.lock
index 84b9923..7fb6d87 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -141,10 +141,10 @@ packages:
     dependency: transitive
     description:
       name: desktop_webview_window
-      sha256: "57cf20d81689d5cbb1adfd0017e96b669398a669d927906073b0e42fc64111c0"
+      sha256: b6fdae2cbf9571879b1761c12f27facaf82e22d0bdc74d049907c2a09a432957
       url: "https://pub.dev"
     source: hosted
-    version: "0.2.3"
+    version: "0.3.0"
   fake_async:
     dependency: transitive
     description:
@@ -295,18 +295,18 @@ packages:
     dependency: "direct main"
     description:
       name: flutter_web_auth_2
-      sha256: "3c14babeaa066c371f3a743f204dd0d348b7d42ffa6fae7a9847a521aff33696"
+      sha256: a7655829251ee63aae64a748f8512f36670d8eba4657b0055cdf5ef304a9d164
       url: "https://pub.dev"
     source: hosted
-    version: "4.1.0"
+    version: "5.1.0"
   flutter_web_auth_2_platform_interface:
     dependency: transitive
     description:
       name: flutter_web_auth_2_platform_interface
-      sha256: c63a472c8070998e4e422f6b34a17070e60782ac442107c70000dd1bed645f4d
+      sha256: ba0fbba55bffb47242025f96852ad1ffba34bc451568f56ef36e613612baffab
       url: "https://pub.dev"
     source: hosted
-    version: "4.1.0"
+    version: "5.0.0"
   flutter_web_plugins:
     dependency: transitive
     description: flutter
diff --git a/pubspec.yaml b/pubspec.yaml
index 2d8e6e7..0540960 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -76,7 +76,7 @@ dependencies:
 
   # Browser-based OAuth2 (PKCE) redirect capture for Dropbox/OneDrive —
   # unlike Google, neither has an official Flutter sign-in package.
-  flutter_web_auth_2: ^4.1.0
+  flutter_web_auth_2: ^5.1.0
 
   # PKCE code_verifier/code_challenge generation (SHA-256 + base64url)
   crypto: ^3.0.5