diff --git a/.idea/caches/build_file_checksums.ser b/.idea/caches/build_file_checksums.ser
new file mode 100644
index 0000000..7cfcab9
Binary files /dev/null and b/.idea/caches/build_file_checksums.ser differ
diff --git a/.idea/caches/gradle_models.ser b/.idea/caches/gradle_models.ser
new file mode 100644
index 0000000..34fd8d6
Binary files /dev/null and b/.idea/caches/gradle_models.ser differ
diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
new file mode 100644
index 0000000..30aa626
--- /dev/null
+++ b/.idea/codeStyles/Project.xml
@@ -0,0 +1,29 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <Objective-C-extensions>
+      <file>
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Import" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Macro" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Typedef" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Enum" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Constant" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Global" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Struct" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="FunctionPredecl" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Function" />
+      </file>
+      <class>
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Property" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Synthesize" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="InitMethod" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="StaticMethod" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="InstanceMethod" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="DeallocMethod" />
+      </class>
+      <extensions>
+        <pair source="cpp" header="h" fileNamingConvention="NONE" />
+        <pair source="c" header="h" fileNamingConvention="NONE" />
+      </extensions>
+    </Objective-C-extensions>
+  </code_scheme>
+</component>
\ No newline at end of file
diff --git a/README.md b/README.md
index 9f98053..5cf56ca 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # FancyToast-Android
 [![platform](https://img.shields.io/badge/platform-Android-yellow.svg)](https://www.android.com)
-[![API](https://img.shields.io/badge/API-21%2B-brightgreen.svg?style=plastic)](https://android-arsenal.com/api?level=21)
+[![API](https://img.shields.io/badge/API-15%2B-brightgreen.svg?style=plastic)](https://android-arsenal.com/api?level=15)
 [![License](https://img.shields.io/badge/license-Apache%202-4EB1BA.svg?style=flat-square)](https://www.apache.org/licenses/LICENSE-2.0.html)
 [![](https://jitpack.io/v/Shashank02051997/FancyToast-Android.svg)](https://jitpack.io/#Shashank02051997/FancyToast-Android)
 [![Android Arsenal]( https://img.shields.io/badge/Android%20Arsenal-FancyToast-green.svg?style=flat )]( https://android-arsenal.com/details/1/6357 )
diff --git a/fancytoastlib/build.gradle b/fancytoastlib/build.gradle
index a4ae195..10d88cc 100644
--- a/fancytoastlib/build.gradle
+++ b/fancytoastlib/build.gradle
@@ -6,7 +6,7 @@ android {
     compileSdkVersion 28
 
     defaultConfig {
-        minSdkVersion 21
+        minSdkVersion 15
         targetSdkVersion 28
         versionCode 1
         versionName "1.0"