diff --git a/examples/github_issues/pubspec.yaml b/examples/github_issues/pubspec.yaml
index ba4a1100ee..2743c91e68 100644
--- a/examples/github_issues/pubspec.yaml
+++ b/examples/github_issues/pubspec.yaml
@@ -1,6 +1,6 @@
 name: examples.github_issues
 environment:
-  sdk: ">=2.0.0-dev.52.0 <2.0.0"
+  sdk: ">=2.0.0-dev.55.0 <2.0.0"
 
 dependencies:
   angular_components: ^0.9.0-alpha+8
diff --git a/examples/hacker_news_pwa/pubspec.yaml b/examples/hacker_news_pwa/pubspec.yaml
index 804e8a6b16..76c31db830 100644
--- a/examples/hacker_news_pwa/pubspec.yaml
+++ b/examples/hacker_news_pwa/pubspec.yaml
@@ -1,6 +1,6 @@
 name: examples.hacker_news_pwa
 environment:
-  sdk: ">=2.0.0-dev.52.0 <2.0.0"
+  sdk: ">=2.0.0-dev.55.0 <2.0.0"
 
 dependencies:
   angular: ^5.0.0-alpha
diff --git a/examples/hello_world/pubspec.yaml b/examples/hello_world/pubspec.yaml
index f1c512092a..0f36efeee0 100644
--- a/examples/hello_world/pubspec.yaml
+++ b/examples/hello_world/pubspec.yaml
@@ -1,7 +1,7 @@
 name: examples.hello_world
 
 environment:
-  sdk: ">=2.0.0-dev.52.0 <2.0.0"
+  sdk: ">=2.0.0-dev.55.0 <2.0.0"
 
 dependencies:
   angular: ^5.0.0-alpha
diff --git a/examples/registration_form/pubspec.yaml b/examples/registration_form/pubspec.yaml
index c61e9aa7a7..2227a8694f 100644
--- a/examples/registration_form/pubspec.yaml
+++ b/examples/registration_form/pubspec.yaml
@@ -1,7 +1,7 @@
 name: examples.registration_form
 
 environment:
-  sdk: ">=2.0.0-dev.52.0 <2.0.0"
+  sdk: ">=2.0.0-dev.55.0 <2.0.0"
 
 dependencies:
   angular: ^5.0.0-alpha