diff --git a/.idea/compiler.xml b/.idea/compiler.xml
index e0dd8d0..ef24987 100644
--- a/.idea/compiler.xml
+++ b/.idea/compiler.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel>
+    <bytecodeTargetLevel target="1.8">
       <module name="mobplugin.main" target="1.8" />
       <module name="mobplugin.test" target="1.8" />
     </bytecodeTargetLevel>
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 5d9e04b..38b4a97 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -4,7 +4,7 @@
   <component name="JavaScriptSettings">
     <option name="languageLevel" value="ES6" />
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="false" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 8a8b847..43ee428 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ plugins {
 }
 
 group 'com.alekseyzhelo.evilislands'
-version '1.1'
+version '1.1.1'
 
 sourceCompatibility = 1.8
 tasks.withType(JavaCompile) { options.encoding = 'UTF-8' }
@@ -23,17 +23,35 @@ dependencies {
 
 // See https://github.com/JetBrains/gradle-intellij-plugin/
 intellij {
-    version '2019.3'
+    version '2020.1'
     type 'IC'
     plugins 'java' //, 'PsiViewer:193-SNAPSHOT'
 }
 patchPluginXml {
     changeNotes """
+    Version 1.1.1:
+    <ul>
+        <li> Updated to work with Intellij 2020.1 </li>
+    </ul>
+    Version 1.1:
       <ul>
         <li> Implemented multiline comments </li>
         <li> Improved non-Java IDE support </li>
         <li> Error highlighting for unclosed strings/multiline comments </li>
-      </ul>"""
+      </ul>
+      Version 1.0:
+      <ul>
+       <li> Syntax checking </li>
+        <li> Type checking </li>
+        <li> Code completion, including object ID/name completion and GSGetVar/GSSetVar variable completion</li>
+        <li> Code formatting </li>
+        <li> Basic code inspections </li>
+        <li> Find usages </li>
+        <li> Customizable syntax highlighting </li>
+        <li> Structure view </li>
+        <li> Live templates </li>
+      <ul>
+      """
     sinceBuild '192'
 }
 
diff --git a/src/main/java/com/alekseyzhelo/evilislands/mobplugin/projectView/EIMobPsiFileNode.java b/src/main/java/com/alekseyzhelo/evilislands/mobplugin/projectView/EIMobPsiFileNode.java
index 9ee5778..1a3e5f6 100644
--- a/src/main/java/com/alekseyzhelo/evilislands/mobplugin/projectView/EIMobPsiFileNode.java
+++ b/src/main/java/com/alekseyzhelo/evilislands/mobplugin/projectView/EIMobPsiFileNode.java
@@ -14,7 +14,7 @@
 
 public class EIMobPsiFileNode extends PsiFileNode {
 
-    private final List<AbstractTreeNode> children;
+    private final List<AbstractTreeNode<?>> children;
 
     EIMobPsiFileNode(Project project, @NotNull PsiFile value, ViewSettings viewSettings, PsiFileNode scriptNode) {
         super(project, value, viewSettings);
@@ -26,7 +26,7 @@ public class EIMobPsiFileNode extends PsiFileNode {
     }
 
     @Override
-    public Collection<AbstractTreeNode> getChildrenImpl() {
+    public Collection<AbstractTreeNode<?>> getChildrenImpl() {
         return children;
     }
 
diff --git a/src/main/java/com/alekseyzhelo/evilislands/mobplugin/projectView/EIMobStructureProvider.java b/src/main/java/com/alekseyzhelo/evilislands/mobplugin/projectView/EIMobStructureProvider.java
index f9978f8..3241f76 100644
--- a/src/main/java/com/alekseyzhelo/evilislands/mobplugin/projectView/EIMobStructureProvider.java
+++ b/src/main/java/com/alekseyzhelo/evilislands/mobplugin/projectView/EIMobStructureProvider.java
@@ -19,7 +19,9 @@
 public class EIMobStructureProvider implements TreeStructureProvider {
     @NotNull
     @Override
-    public Collection<AbstractTreeNode> modify(@NotNull AbstractTreeNode parent, @NotNull Collection<AbstractTreeNode> children, ViewSettings settings) {
+    public Collection<AbstractTreeNode<?>> modify(@NotNull AbstractTreeNode<?> parent,
+                                                  @NotNull Collection<AbstractTreeNode<?>> children,
+                                                  ViewSettings settings) {
         return children.stream()
                 .map((x) -> convertMobNode(x, children))
                 .filter(Objects::nonNull)
@@ -28,11 +30,12 @@ public Collection<AbstractTreeNode> modify(@NotNull AbstractTreeNode parent, @No
 
     @Nullable
     @Override
-    public Object getData(@NotNull Collection<AbstractTreeNode> selected, @NotNull String dataId) {
+    public Object getData(@NotNull Collection<AbstractTreeNode<?>> selected, @NotNull String dataId) {
         return null;
     }
 
-    private AbstractTreeNode<?> convertMobNode(AbstractTreeNode<?> node, Collection<AbstractTreeNode> siblings) {
+    private AbstractTreeNode<?> convertMobNode(AbstractTreeNode<?> node,
+                                               Collection<AbstractTreeNode<?>> siblings) {
         if (node instanceof PsiFileNode) {
             VirtualFile virtualFile = ((PsiFileNode) node).getVirtualFile();
             if (virtualFile != null) {
@@ -63,7 +66,7 @@ private AbstractTreeNode<?> convertMobNode(AbstractTreeNode<?> node, Collection<
 
     @Nullable
     private PsiFileNode findSameNamedSiblingOfType(
-            Collection<AbstractTreeNode> siblings,
+            Collection<AbstractTreeNode<?>> siblings,
             VirtualFile file,
             FileType fileTypeInstance
     ) {
diff --git a/src/main/java/com/alekseyzhelo/evilislands/mobplugin/script/codeInsight/EIFunctionParameterInfoHandler.java b/src/main/java/com/alekseyzhelo/evilislands/mobplugin/script/codeInsight/EIFunctionParameterInfoHandler.java
index d6148af..d56f400 100644
--- a/src/main/java/com/alekseyzhelo/evilislands/mobplugin/script/codeInsight/EIFunctionParameterInfoHandler.java
+++ b/src/main/java/com/alekseyzhelo/evilislands/mobplugin/script/codeInsight/EIFunctionParameterInfoHandler.java
@@ -19,9 +19,9 @@
 
 public class EIFunctionParameterInfoHandler implements ParameterInfoHandlerWithTabActionSupport<EIParams, List<EIFormalParameter>, EIExpression>, DumbAware {
 
-    private static final Set<Class> ourArgumentListAllowedParentClassesSet
+    private static final Set<Class<?>> ourArgumentListAllowedParentClassesSet
             = ContainerUtil.newHashSet(EIFunctionCall.class);
-    private static final Set<Class> ourStopSearch = Collections.singleton(EIScriptBlock.class);
+    private static final Set<Class<?>> ourStopSearch = Collections.singleton(EIScriptBlock.class);
 
     @Override
     public boolean couldShowInLookup() {
@@ -130,13 +130,13 @@ public IElementType getActualParametersRBraceType() {
 
     @NotNull
     @Override
-    public Set<Class> getArgumentListAllowedParentClasses() {
+    public Set<Class<?>> getArgumentListAllowedParentClasses() {
         return ourArgumentListAllowedParentClassesSet;
     }
 
     @NotNull
     @Override
-    public Set<? extends Class> getArgListStopSearchClasses() {
+    public Set<? extends Class<?>> getArgListStopSearchClasses() {
         return ourStopSearch;
     }