diff --git a/pkg/meta/lib/meta.dart b/pkg/meta/lib/meta.dart
index c6996cc..9fd9fca 100644
--- a/pkg/meta/lib/meta.dart
+++ b/pkg/meta/lib/meta.dart
@@ -12,7 +12,7 @@
 /// function's name differently.
 ///
 /// For information on installing and importing this library, see the
-/// [meta package on pub.dartlang.org] (http://pub.dartlang.org/packages/meta).
+/// [meta package on pub.dartlang.org] (https://pub.dartlang.org/packages/meta).
 /// For examples of using annotations, see
 /// [Metadata](https://www.dartlang.org/docs/dart-up-and-running/ch02.html#metadata)
 /// in the language tour.
diff --git a/sdk/lib/_http/http.dart b/sdk/lib/_http/http.dart
index 1021892..393045f 100644
--- a/sdk/lib/_http/http.dart
+++ b/sdk/lib/_http/http.dart
@@ -1166,7 +1166,7 @@
  * that contains the content of and information about an HTTP request.
  *
  * __Note__: Check out the
- * [http_server](http://pub.dartlang.org/packages/http_server)
+ * [http_server](https://pub.dartlang.org/packages/http_server)
  * package, which makes working with the low-level
  * dart:io HTTP server subsystem easier.
  *
diff --git a/sdk/lib/core/date_time.dart b/sdk/lib/core/date_time.dart
index c541c66..1f46d11 100644
--- a/sdk/lib/core/date_time.dart
+++ b/sdk/lib/core/date_time.dart
@@ -117,7 +117,7 @@
  *
  * The DateTime class does not provide internationalization.
  * To internationalize your code, use
- * the [intl](http://pub.dartlang.org/packages/intl) package.
+ * the [intl](https://pub.dartlang.org/packages/intl) package.
  *
  */
 class DateTime implements Comparable<DateTime> {
@@ -552,7 +552,7 @@
    * The returned string is constructed for the time zone of this instance.
    * The `toString()` method provides a simply formatted string.
    * It does not support internationalized strings.
-   * Use the [intl](http://pub.dartlang.org/packages/intl) package
+   * Use the [intl](https://pub.dartlang.org/packages/intl) package
    * at the pub shared packages repo.
    *
    * The resulting string can be parsed back using [parse].