diff --git a/utbot-junit-contest/runtool b/utbot-junit-contest/runtool
index 43e3becd6c..b191e8a6fc 100644
--- a/utbot-junit-contest/runtool
+++ b/utbot-junit-contest/runtool
@@ -1,10 +1,10 @@
 #!/bin/bash
 
 # switch to environment JVM as needed
-JAVA_HOME=/usr
+JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
 
-APACHE_EXECS_LIB=lib/org/apache/commons/commons-exec/1.2/commons-exec-1.2.jar
-TOOL=lib/runtool-1.0.0.jar
+TOOL=lib/utbot-junit-contest-1.0.jar
 
+export UTBOT_EXTRA_PARAMS=-Xmx4g
 export JAVA_HOME=$JAVA_HOME
-$JAVA_HOME/bin/java -cp $TOOL:$APACHE_EXECS_LIB  sbst.runtool.Main
+$JAVA_HOME/bin/java -cp $TOOL sbst.runtool.Main
diff --git a/utbot-junit-contest/src/main/kotlin/org/utbot/runtool/UtBotTool2.kt b/utbot-junit-contest/src/main/kotlin/org/utbot/runtool/UtBotTool2.kt
index d28051b2c4..0f9e084930 100644
--- a/utbot-junit-contest/src/main/kotlin/org/utbot/runtool/UtBotTool2.kt
+++ b/utbot-junit-contest/src/main/kotlin/org/utbot/runtool/UtBotTool2.kt
@@ -11,7 +11,7 @@ import sbst.runtool.ITestingTool
 class UtBotTool2 : ITestingTool {
 
     override fun getExtraClassPath(): List<File> {
-        return mutableListOf()
+        return mutableListOf(File("lib", "mockito-core-4.11.0.jar"))
     }
 
     lateinit var sootClasspathString: String