diff --git a/build.gradle b/build.gradle
index a6688b0..dcba93d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0-beta6'
+        classpath 'com.android.tools.build:gradle:3.0.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/library/src/main/res/values/attrs.xml b/library/src/main/res/values/attrs.xml
index 605e5e3..c3ccbdb 100644
--- a/library/src/main/res/values/attrs.xml
+++ b/library/src/main/res/values/attrs.xml
@@ -3,7 +3,7 @@
     <declare-styleable name="MaterialSpinner">
         <attr name="ms_baseColor" format="color"/>
         <attr name="ms_highlightColor" format="color"/>
-        <attr name="ms_errorColor" format="color"/>
+        <attr name="ms_errorColor" format="color|reference"/>
         <attr name="ms_error" format="string"/>
         <attr name="ms_hint" format="string"/>
         <attr name="ms_hintColor" format="color"/>
@@ -26,4 +26,4 @@
         <attr name="ms_dropDownHintView" format="reference"/>
 
     </declare-styleable>
-</resources>
\ No newline at end of file
+</resources>