diff --git a/opacclient/.idea/inspectionProfiles/Project_Default.xml b/opacclient/.idea/inspectionProfiles/Project_Default.xml
index 2a9278474..f0920495b 100644
--- a/opacclient/.idea/inspectionProfiles/Project_Default.xml
+++ b/opacclient/.idea/inspectionProfiles/Project_Default.xml
@@ -13,7 +13,6 @@
     <inspection_tool class="EnumSwitchStatementWhichMissesCases" enabled="true" level="WARNING" enabled_by_default="true">
       <option name="ignoreSwitchStatementsWithDefault" value="false" />
     </inspection_tool>
-    <inspection_tool class="GroovyAssignabilityCheck" enabled="false" level="WARNING" enabled_by_default="false" />
     <inspection_tool class="GroovyUnusedAssignment" enabled="false" level="WARNING" enabled_by_default="false" />
     <inspection_tool class="LoggerInitializedWithForeignClass" enabled="false" level="WARNING" enabled_by_default="false">
       <option name="loggerClassName" value="org.apache.log4j.Logger,org.slf4j.LoggerFactory,org.apache.commons.logging.LogFactory,java.util.logging.Logger" />
diff --git a/opacclient/build.gradle b/opacclient/build.gradle
index 07f60af37..35859f004 100644
--- a/opacclient/build.gradle
+++ b/opacclient/build.gradle
@@ -7,7 +7,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.1.3'
+        classpath 'com.android.tools.build:gradle:2.2.0'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.6'
         classpath 'org.kt3k.gradle.plugin:coveralls-gradle-plugin:2.4.0'
     }