diff --git a/CHANGELOG.md b/CHANGELOG.md
index b6dfa8a..a880a18 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.1.0-nullsafety.1
+
+* fix android/ios/macos/windows build failed.
+
 ## 1.1.0-nullsafety.0
 
 * add web support
diff --git a/example/pubspec.lock b/example/pubspec.lock
index 4b9c25b..2cf6e51 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -139,7 +139,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "1.1.0-nullsafety.0"
+    version: "1.1.0-nullsafety.1"
   term_glyph:
     dependency: transitive
     description:
diff --git a/lib/system_clock.dart b/lib/system_clock.dart
index 0f34aeb..d8dca1a 100644
--- a/lib/system_clock.dart
+++ b/lib/system_clock.dart
@@ -1,6 +1,6 @@
 library system_clock;
 
-import 'src/clock.dart' if (dart.library.io) 'src/clocks.dart' as clock;
+import 'src/clock.dart' if (dart.library.io) 'src/clock_io.dart' as clock;
 
 ///
 /// timekeeping facilities.
diff --git a/pubspec.yaml b/pubspec.yaml
index 5cb3661..a2ca7e9 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: system_clock
 description: Flutter timekeeping facilities. Powered by ffi
-version: 1.1.0-nullsafety.0
+version: 1.1.0-nullsafety.1
 author: yangbinyhhbn@gmail.com
 homepage: https://github.com/boyan01/system_clock