diff --git a/CHANGELOG.md b/CHANGELOG.md
index 47dbef2..95a4c24 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## [0.1.2]
+
+* Added environment restrictions
+
 ## [0.1.1]
 
 * Fixed iOS overscroll bug
diff --git a/pubspec.yaml b/pubspec.yaml
index 6b1f1a5..247acdd 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,9 +1,12 @@
 name: numberpicker
-version: 0.1.1
+version: 0.1.2
 description: NumberPicker is a widget allowing user to choose numbers by scrolling spinners.
 author: Marcin Szalek <marcinszalek1@gmail.com>
 homepage: https://github.com/MarcinusX/NumberPicker
 
+environment:
+  sdk: ">=1.23.0 <2.0.0"
+
 dependencies:
   flutter:
     sdk: flutter