diff --git a/maven-wrapper/pom.xml b/maven-wrapper/pom.xml
index 364034ec..4c4e0523 100644
--- a/maven-wrapper/pom.xml
+++ b/maven-wrapper/pom.xml
@@ -30,9 +30,19 @@
             </snapshots>
         </repository>
         <repository>
-            <id>tmc</id>
-            <name>TMC repo</name>
-            <url>http://maven.testmycode.net/nexus/content/groups/public</url>
+            <id>maven.mooc.fi.releases</id>
+            <name>TMC releases</name>
+            <url>https://maven.mooc.fi/releases</url>
+        </repository>
+        <repository>
+            <id>maven.mooc.fi.snapshots</id>
+            <name>TMC snapshots</name>
+            <url>https://maven.mooc.fi/snapshots</url>
+        </repository>
+<!--        <repository>
+            <id>maven.mooc.fi.releases</id>
+            <name>TMC release</name>
+            <url>https://maven.mooc.fi/releases</url>
             <releases>
                 <enabled>true</enabled>
             </releases>
@@ -40,6 +50,17 @@
                 <enabled>true</enabled>
             </snapshots>
         </repository>
+        <repository>
+            <id>maven.mooc.fi.snapshots</id>
+            <name>TMC snapshots</name>
+            <url>https://maven.mooc.fi/snapshots</url> 
+            <releases>
+                <enabled>true</enabled>
+            </releases>
+            <snapshots>
+                <enabled>true</enabled>
+            </snapshots>
+        </repository>-->
     </repositories>
 
     <dependencies>
@@ -164,10 +185,10 @@
                 <!-- NetBeans 6.9+ requires JDK 6 -->
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>2.5.1</version>
+                <version>3.8.1</version>
                 <configuration>
-                    <source>1.6</source>
-                    <target>1.6</target>
+                    <source>11</source>
+                    <target>11</target>
                 </configuration>
             </plugin>
 
diff --git a/nbproject/platform.properties b/nbproject/platform.properties
index e3bc69ec..664b7628 100644
--- a/nbproject/platform.properties
+++ b/nbproject/platform.properties
@@ -89,4 +89,4 @@ nbjdk.active=default
 #    org.openide.execution,\
 #    org.openide.options,\
 #    org.openide.util.enumerations
-nbplatform.active=Apache_NetBeans_IDE_11.2
+nbplatform.active=Apache_NetBeans_IDE_12.4
diff --git a/nbproject/project.properties b/nbproject/project.properties
index 32d79ce0..04e13253 100644
--- a/nbproject/project.properties
+++ b/nbproject/project.properties
@@ -16,4 +16,4 @@ project.fi.helsinki.cs.tmc.application=tmc-application
 run.args=-J-client -J-Xss2m -J-Xms32m -J-XX:PermSize=256m -J-Dapple.laf.useScreenMenuBar=true -J-Dapple.awt.graphics.UseQuartz=true -J-Dsun.java2d.noddraw=true -J-Dsun.zip.disableMemoryMapping=true
 run.jvmargs= -J-XX:PermSize=1024m -J-XX:MaxPermSize=2048m -XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenSweepingEnabled
 # NB version
-app.version=11.1
+app.version=12.4