diff --git a/Bots.ipr b/Bots.ipr
index fe9e67d4..48d3590a 100644
--- a/Bots.ipr
+++ b/Bots.ipr
@@ -17,6 +17,7 @@
         <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
         <outputRelativeToContentRoot value="true" />
         <module name="telegrambots" />
+        <module name="telegrambots-abilities" />
         <module name="telegrambots-extensions" />
         <module name="telegrambots-meta" />
       </profile>
@@ -30,12 +31,14 @@
     <bytecodeTargetLevel>
       <module name="Bots" target="1.5" />
       <module name="telegrambots" target="1.8" />
+      <module name="telegrambots-abilities" target="1.8" />
       <module name="telegrambots-extensions" target="1.8" />
       <module name="telegrambots-meta" target="1.8" />
     </bytecodeTargetLevel>
   </component>
   <component name="Encoding" defaultCharsetForPropertiesFiles="UTF-8">
     <file url="file://$PROJECT_DIR$/telegrambots" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/telegrambots-abilities" charset="UTF-8" />
     <file url="file://$PROJECT_DIR$/telegrambots-extensions" charset="UTF-8" />
     <file url="file://$PROJECT_DIR$/telegrambots-meta" charset="UTF-8" />
     <file url="PROJECT" charset="UTF-8" />
@@ -126,6 +129,9 @@
     <exe-path>/usr/local/bin/bower</exe-path>
     <config-path />
   </component>
+  <component name="KotlinCommonCompilerArguments">
+    <option name="coroutinesWarn" value="false" />
+  </component>
   <component name="MavenProjectsManager">
     <option name="originalFiles">
       <list>
@@ -264,6 +270,7 @@
     <modules>
       <module fileurl="file://$PROJECT_DIR$/Bots.iml" filepath="$PROJECT_DIR$/Bots.iml" />
       <module fileurl="file://$PROJECT_DIR$/telegrambots/telegrambots.iml" filepath="$PROJECT_DIR$/telegrambots/telegrambots.iml" />
+      <module fileurl="file://$PROJECT_DIR$/telegrambots-abilities/telegrambots-abilities.iml" filepath="$PROJECT_DIR$/telegrambots-abilities/telegrambots-abilities.iml" />
       <module fileurl="file://$PROJECT_DIR$/telegrambots-extensions/telegrambots-extensions.iml" filepath="$PROJECT_DIR$/telegrambots-extensions/telegrambots-extensions.iml" />
       <module fileurl="file://$PROJECT_DIR$/telegrambots-meta/telegrambots-meta.iml" filepath="$PROJECT_DIR$/telegrambots-meta/telegrambots-meta.iml" />
     </modules>
@@ -497,6 +504,17 @@
         <root url="jar://$MAVEN_REPOSITORY$/javax/ws/rs/javax.ws.rs-api/2.0.1/javax.ws.rs-api-2.0.1-sources.jar!/" />
       </SOURCES>
     </library>
+    <library name="Maven: junit:junit:4.11">
+      <CLASSES>
+        <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.11/junit-4.11.jar!/" />
+      </CLASSES>
+      <JAVADOC>
+        <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.11/junit-4.11-javadoc.jar!/" />
+      </JAVADOC>
+      <SOURCES>
+        <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.11/junit-4.11-sources.jar!/" />
+      </SOURCES>
+    </library>
     <library name="Maven: junit:junit:4.12">
       <CLASSES>
         <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.12/junit-4.12.jar!/" />
@@ -508,6 +526,39 @@
         <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.12/junit-4.12-sources.jar!/" />
       </SOURCES>
     </library>
+    <library name="Maven: net.jcip:jcip-annotations:1.0">
+      <CLASSES>
+        <root url="jar://$MAVEN_REPOSITORY$/net/jcip/jcip-annotations/1.0/jcip-annotations-1.0.jar!/" />
+      </CLASSES>
+      <JAVADOC>
+        <root url="jar://$MAVEN_REPOSITORY$/net/jcip/jcip-annotations/1.0/jcip-annotations-1.0-javadoc.jar!/" />
+      </JAVADOC>
+      <SOURCES>
+        <root url="jar://$MAVEN_REPOSITORY$/net/jcip/jcip-annotations/1.0/jcip-annotations-1.0-sources.jar!/" />
+      </SOURCES>
+    </library>
+    <library name="Maven: net.jpountz.lz4:lz4:1.3.0">
+      <CLASSES>
+        <root url="jar://$MAVEN_REPOSITORY$/net/jpountz/lz4/lz4/1.3.0/lz4-1.3.0.jar!/" />
+      </CLASSES>
+      <JAVADOC>
+        <root url="jar://$MAVEN_REPOSITORY$/net/jpountz/lz4/lz4/1.3.0/lz4-1.3.0-javadoc.jar!/" />
+      </JAVADOC>
+      <SOURCES>
+        <root url="jar://$MAVEN_REPOSITORY$/net/jpountz/lz4/lz4/1.3.0/lz4-1.3.0-sources.jar!/" />
+      </SOURCES>
+    </library>
+    <library name="Maven: org.apache.commons:commons-lang3:3.5">
+      <CLASSES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/apache/commons/commons-lang3/3.5/commons-lang3-3.5.jar!/" />
+      </CLASSES>
+      <JAVADOC>
+        <root url="jar://$MAVEN_REPOSITORY$/org/apache/commons/commons-lang3/3.5/commons-lang3-3.5-javadoc.jar!/" />
+      </JAVADOC>
+      <SOURCES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/apache/commons/commons-lang3/3.5/commons-lang3-3.5-sources.jar!/" />
+      </SOURCES>
+    </library>
     <library name="Maven: org.apache.httpcomponents:httpclient:4.5.3">
       <CLASSES>
         <root url="jar://$MAVEN_REPOSITORY$/org/apache/httpcomponents/httpclient/4.5.3/httpclient-4.5.3.jar!/" />
@@ -541,6 +592,39 @@
         <root url="jar://$MAVEN_REPOSITORY$/org/apache/httpcomponents/httpmime/4.5.3/httpmime-4.5.3-sources.jar!/" />
       </SOURCES>
     </library>
+    <library name="Maven: org.eclipse.collections:eclipse-collections-api:7.1.1">
+      <CLASSES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/eclipse/collections/eclipse-collections-api/7.1.1/eclipse-collections-api-7.1.1.jar!/" />
+      </CLASSES>
+      <JAVADOC>
+        <root url="jar://$MAVEN_REPOSITORY$/org/eclipse/collections/eclipse-collections-api/7.1.1/eclipse-collections-api-7.1.1-javadoc.jar!/" />
+      </JAVADOC>
+      <SOURCES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/eclipse/collections/eclipse-collections-api/7.1.1/eclipse-collections-api-7.1.1-sources.jar!/" />
+      </SOURCES>
+    </library>
+    <library name="Maven: org.eclipse.collections:eclipse-collections-forkjoin:7.1.1">
+      <CLASSES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/eclipse/collections/eclipse-collections-forkjoin/7.1.1/eclipse-collections-forkjoin-7.1.1.jar!/" />
+      </CLASSES>
+      <JAVADOC>
+        <root url="jar://$MAVEN_REPOSITORY$/org/eclipse/collections/eclipse-collections-forkjoin/7.1.1/eclipse-collections-forkjoin-7.1.1-javadoc.jar!/" />
+      </JAVADOC>
+      <SOURCES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/eclipse/collections/eclipse-collections-forkjoin/7.1.1/eclipse-collections-forkjoin-7.1.1-sources.jar!/" />
+      </SOURCES>
+    </library>
+    <library name="Maven: org.eclipse.collections:eclipse-collections:7.1.1">
+      <CLASSES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/eclipse/collections/eclipse-collections/7.1.1/eclipse-collections-7.1.1.jar!/" />
+      </CLASSES>
+      <JAVADOC>
+        <root url="jar://$MAVEN_REPOSITORY$/org/eclipse/collections/eclipse-collections/7.1.1/eclipse-collections-7.1.1-javadoc.jar!/" />
+      </JAVADOC>
+      <SOURCES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/eclipse/collections/eclipse-collections/7.1.1/eclipse-collections-7.1.1-sources.jar!/" />
+      </SOURCES>
+    </library>
     <library name="Maven: org.glassfish.grizzly:grizzly-framework:2.3.28">
       <CLASSES>
         <root url="jar://$MAVEN_REPOSITORY$/org/glassfish/grizzly/grizzly-framework/2.3.28/grizzly-framework-2.3.28.jar!/" />
@@ -816,6 +900,28 @@
         <root url="jar://$MAVEN_REPOSITORY$/org/javassist/javassist/3.20.0-GA/javassist-3.20.0-GA-sources.jar!/" />
       </SOURCES>
     </library>
+    <library name="Maven: org.jetbrains.kotlin:kotlin-runtime:1.0.7">
+      <CLASSES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-runtime/1.0.7/kotlin-runtime-1.0.7.jar!/" />
+      </CLASSES>
+      <JAVADOC>
+        <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-runtime/1.0.7/kotlin-runtime-1.0.7-javadoc.jar!/" />
+      </JAVADOC>
+      <SOURCES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-runtime/1.0.7/kotlin-runtime-1.0.7-sources.jar!/" />
+      </SOURCES>
+    </library>
+    <library name="Maven: org.jetbrains.kotlin:kotlin-stdlib:1.0.7">
+      <CLASSES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.0.7/kotlin-stdlib-1.0.7.jar!/" />
+      </CLASSES>
+      <JAVADOC>
+        <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.0.7/kotlin-stdlib-1.0.7-javadoc.jar!/" />
+      </JAVADOC>
+      <SOURCES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.0.7/kotlin-stdlib-1.0.7-sources.jar!/" />
+      </SOURCES>
+    </library>
     <library name="Maven: org.json:json:20160810">
       <CLASSES>
         <root url="jar://$MAVEN_REPOSITORY$/org/json/json/20160810/json-20160810.jar!/" />
@@ -827,6 +933,28 @@
         <root url="jar://$MAVEN_REPOSITORY$/org/json/json/20160810/json-20160810-sources.jar!/" />
       </SOURCES>
     </library>
+    <library name="Maven: org.mapdb:elsa:3.0.0-M5">
+      <CLASSES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/mapdb/elsa/3.0.0-M5/elsa-3.0.0-M5.jar!/" />
+      </CLASSES>
+      <JAVADOC>
+        <root url="jar://$MAVEN_REPOSITORY$/org/mapdb/elsa/3.0.0-M5/elsa-3.0.0-M5-javadoc.jar!/" />
+      </JAVADOC>
+      <SOURCES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/mapdb/elsa/3.0.0-M5/elsa-3.0.0-M5-sources.jar!/" />
+      </SOURCES>
+    </library>
+    <library name="Maven: org.mapdb:mapdb:3.0.4">
+      <CLASSES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/mapdb/mapdb/3.0.4/mapdb-3.0.4.jar!/" />
+      </CLASSES>
+      <JAVADOC>
+        <root url="jar://$MAVEN_REPOSITORY$/org/mapdb/mapdb/3.0.4/mapdb-3.0.4-javadoc.jar!/" />
+      </JAVADOC>
+      <SOURCES>
+        <root url="jar://$MAVEN_REPOSITORY$/org/mapdb/mapdb/3.0.4/mapdb-3.0.4-sources.jar!/" />
+      </SOURCES>
+    </library>
     <library name="Maven: org.mockito:mockito-all:2.0.2-beta">
       <CLASSES>
         <root url="jar://$MAVEN_REPOSITORY$/org/mockito/mockito-all/2.0.2-beta/mockito-all-2.0.2-beta.jar!/" />
diff --git a/telegrambots-abilities/pom.xml b/telegrambots-abilities/pom.xml
index 291cacec..6ac35993 100644
--- a/telegrambots-abilities/pom.xml
+++ b/telegrambots-abilities/pom.xml
@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.telegram</groupId>
     <artifactId>telegrambots-abilities</artifactId>
-    <version>3.1.0</version>
+    <version>3.1.2</version>
     <packaging>jar</packaging>
 
     <name>Telegram Ability Bot</name>
@@ -59,7 +59,10 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <bots.version>3.1.0</bots.version>
+        <bots.version>3.1.2</bots.version>
+        <commonslang.version>3.5</commonslang.version>
+        <mapdb.version>3.0.4</mapdb.version>
+        <guava.version>19.0</guava.version>
     </properties>
 
     <dependencies>
@@ -71,18 +74,19 @@
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
-            <version>3.5</version>
+            <version>${commonslang.version}</version>
         </dependency>
         <dependency>
             <groupId>org.mapdb</groupId>
             <artifactId>mapdb</artifactId>
-            <version>3.0.4</version>
+            <version>${mapdb.version}</version>
         </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>19.0</version>
+            <version>${guava.version}</version>
         </dependency>
+
         <dependency>
             <groupId>org.mockito</groupId>
             <artifactId>mockito-all</artifactId>
diff --git a/telegrambots-abilities/src/main/java/org/telegram/abilitybots/api/db/MapDBContext.java b/telegrambots-abilities/src/main/java/org/telegram/abilitybots/api/db/MapDBContext.java
index 8eeba590..e9d2efd6 100644
--- a/telegrambots-abilities/src/main/java/org/telegram/abilitybots/api/db/MapDBContext.java
+++ b/telegrambots-abilities/src/main/java/org/telegram/abilitybots/api/db/MapDBContext.java
@@ -3,7 +3,6 @@ package org.telegram.abilitybots.api.db;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import com.google.common.collect.ImmutableMap;
 import org.mapdb.DB;
 import org.mapdb.DBMaker;
 import org.mapdb.Serializer;
@@ -29,6 +28,7 @@ import static org.telegram.abilitybots.api.bot.AbilityBot.USERS;
  * @author Abbas Abou Daya
  * @see <a href="https://github.com/jankotek/mapdb">MapDB project</a>
  */
+@SuppressWarnings("unchecked")
 public class MapDBContext implements DBContext {
   private static final String TAG = DBContext.class.getSimpleName();
 
diff --git a/telegrambots-abilities/src/test/java/org/telegram/abilitybots/api/bot/AbilityBotTest.java b/telegrambots-abilities/src/test/java/org/telegram/abilitybots/api/bot/AbilityBotTest.java
index 275b83f3..0d174a8a 100644
--- a/telegrambots-abilities/src/test/java/org/telegram/abilitybots/api/bot/AbilityBotTest.java
+++ b/telegrambots-abilities/src/test/java/org/telegram/abilitybots/api/bot/AbilityBotTest.java
@@ -28,7 +28,6 @@ import static java.util.Collections.emptySet;
 import static org.apache.commons.lang3.ArrayUtils.addAll;
 import static org.apache.commons.lang3.StringUtils.EMPTY;
 import static org.junit.Assert.*;
-import static org.mockito.Matchers.any;
 import static org.mockito.Mockito.*;
 import static org.mockito.internal.verification.VerificationModeFactory.times;
 import static org.telegram.abilitybots.api.bot.AbilityBot.RECOVERY_MESSAGE;
@@ -45,10 +44,10 @@ import static org.telegram.abilitybots.api.objects.Privacy.ADMIN;
 import static org.telegram.abilitybots.api.objects.Privacy.PUBLIC;
 
 public class AbilityBotTest {
-  public static final String[] EMPTY_ARRAY = {};
-  public static final long GROUP_ID = 10L;
-  public static final String TEST = "test";
-  public static final String[] TEXT = {TEST};
+  private static final String[] EMPTY_ARRAY = {};
+  private static final long GROUP_ID = 10L;
+  private static final String TEST = "test";
+  private static final String[] TEXT = {TEST};
   public static final EndUser MUSER = endUser(1, "first", "last", "username");
   public static final EndUser CREATOR = endUser(1337, "creatorFirst", "creatorLast", "creatorUsername");