diff --git a/experimental/desktop_photo_search/pubspec.lock b/experimental/desktop_photo_search/pubspec.lock
index 8dab888f0..9324810c6 100644
--- a/experimental/desktop_photo_search/pubspec.lock
+++ b/experimental/desktop_photo_search/pubspec.lock
@@ -105,14 +105,14 @@ packages:
       name: built_value
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "7.0.4"
+    version: "7.0.6"
   built_value_generator:
     dependency: "direct dev"
     description:
       name: built_value_generator
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "7.0.4"
+    version: "7.0.6"
   charcode:
     dependency: transitive
     description:
@@ -195,7 +195,7 @@ packages:
     description:
       path: "plugins/file_chooser"
       ref: HEAD
-      resolved-ref: aeff699d71972f20151757cc93ec3cac1daaa2f1
+      resolved-ref: "5aaea0eae9661c6e6cacf4e59ce480a17e86bec8"
       url: "https://github.com/google/flutter-desktop-embedding.git"
     source: git
     version: "0.1.0"
@@ -324,7 +324,7 @@ packages:
     description:
       path: "plugins/menubar"
       ref: HEAD
-      resolved-ref: aeff699d71972f20151757cc93ec3cac1daaa2f1
+      resolved-ref: "5aaea0eae9661c6e6cacf4e59ce480a17e86bec8"
       url: "https://github.com/google/flutter-desktop-embedding.git"
     source: git
     version: "0.0.1"
diff --git a/gallery/gallery/pubspec.lock b/gallery/gallery/pubspec.lock
index a25ae7398..0d97a0d2e 100644
--- a/gallery/gallery/pubspec.lock
+++ b/gallery/gallery/pubspec.lock
@@ -190,7 +190,7 @@ packages:
       name: intl
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.16.1"
+    version: "0.16.0"
   intl_translation:
     dependency: "direct main"
     description:
diff --git a/jsonexample/pubspec.lock b/jsonexample/pubspec.lock
index a06c54694..aa6735cdc 100644
--- a/jsonexample/pubspec.lock
+++ b/jsonexample/pubspec.lock
@@ -98,14 +98,14 @@ packages:
       name: built_value
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "7.0.4"
+    version: "7.0.6"
   built_value_generator:
     dependency: "direct dev"
     description:
       name: built_value_generator
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "7.0.4"
+    version: "7.0.6"
   charcode:
     dependency: transitive
     description:
diff --git a/tool/flutter_pub_upgrade.sh b/tool/flutter_pub_upgrade.sh
new file mode 100755
index 000000000..1f67549f2
--- /dev/null
+++ b/tool/flutter_pub_upgrade.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -e
+
+scriptDirectory="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+for file in `find "${scriptDirectory}/.." -name pubspec.yaml`
+do
+    (
+        cd `dirname $file`
+        echo "Updating `pwd`"
+        flutter pub upgrade
+    )
+done
diff --git a/web/dad_jokes/pubspec.lock b/web/dad_jokes/pubspec.lock
index ac0182a50..f3140c4d9 100644
--- a/web/dad_jokes/pubspec.lock
+++ b/web/dad_jokes/pubspec.lock
@@ -73,7 +73,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.5"
+    version: "1.6.0"
   string_scanner:
     dependency: transitive
     description:
@@ -103,4 +103,4 @@ packages:
     source: hosted
     version: "2.0.8"
 sdks:
-  dart: ">=2.4.0 <3.0.0"
+  dart: ">=2.6.0 <3.0.0"
diff --git a/web/filipino_cuisine/pubspec.lock b/web/filipino_cuisine/pubspec.lock
index 8bf49b67c..632141498 100644
--- a/web/filipino_cuisine/pubspec.lock
+++ b/web/filipino_cuisine/pubspec.lock
@@ -87,7 +87,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.5"
+    version: "1.6.0"
   string_scanner:
     dependency: transitive
     description:
@@ -124,5 +124,5 @@ packages:
     source: hosted
     version: "2.0.8"
 sdks:
-  dart: ">=2.4.0 <3.0.0"
+  dart: ">=2.6.0 <3.0.0"
   flutter: ">=0.1.4 <3.0.0"
diff --git a/web/github_dataviz/pubspec.lock b/web/github_dataviz/pubspec.lock
index 12444aa68..c343b98ab 100644
--- a/web/github_dataviz/pubspec.lock
+++ b/web/github_dataviz/pubspec.lock
@@ -80,7 +80,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.5"
+    version: "1.6.0"
   string_scanner:
     dependency: transitive
     description:
@@ -110,4 +110,4 @@ packages:
     source: hosted
     version: "2.0.8"
 sdks:
-  dart: ">=2.5.0 <3.0.0"
+  dart: ">=2.6.0 <3.0.0"