diff --git a/pom.xml b/pom.xml
index 735129c..049b07a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -59,7 +59,7 @@
         <powermock.version>2.0.9</powermock.version>
         <!-- More visible way how to change dependency versions -->
         <spigot.version>1.17-R0.1-SNAPSHOT</spigot.version>
-        <bentobox.version>1.17.0</bentobox.version>
+        <bentobox.version>1.18.0-SNAPSHOT</bentobox.version>
         <level.version>2.7.0-SNAPSHOT</level.version>
         <!-- Revision variable removes warning about dynamic version -->
         <revision>${build.version}-SNAPSHOT</revision>
@@ -229,7 +229,33 @@
                 <version>3.0.0-M5</version>
                 <configuration>
                     <argLine>
-                        --illegal-access=permit
+                        --add-opens java.base/java.lang=ALL-UNNAMED
+                        --add-opens java.base/java.math=ALL-UNNAMED
+                        --add-opens java.base/java.io=ALL-UNNAMED
+                        --add-opens java.base/java.util=ALL-UNNAMED
+                        --add-opens
+                        java.base/java.util.stream=ALL-UNNAMED
+                        --add-opens java.base/java.text=ALL-UNNAMED
+                        --add-opens
+                        java.base/java.util.regex=ALL-UNNAMED
+                        --add-opens
+                        java.base/java.nio.channels.spi=ALL-UNNAMED
+                        --add-opens java.base/sun.nio.ch=ALL-UNNAMED
+                        --add-opens java.base/java.net=ALL-UNNAMED
+                        --add-opens
+                        java.base/java.util.concurrent=ALL-UNNAMED
+                        --add-opens java.base/sun.nio.fs=ALL-UNNAMED
+                        --add-opens java.base/sun.nio.cs=ALL-UNNAMED
+                        --add-opens java.base/java.nio.file=ALL-UNNAMED
+                        --add-opens
+                        java.base/java.nio.charset=ALL-UNNAMED
+                        --add-opens
+                        java.base/java.lang.reflect=ALL-UNNAMED
+                        --add-opens
+                        java.logging/java.util.logging=ALL-UNNAMED
+                        --add-opens java.base/java.lang.ref=ALL-UNNAMED
+                        --add-opens java.base/java.util.jar=ALL-UNNAMED
+                        --add-opens java.base/java.util.zip=ALL-UNNAMED
                     </argLine>
                 </configuration>
             </plugin>
diff --git a/src/test/java/world/bentobox/warps/WarpSignsManagerTest.java b/src/test/java/world/bentobox/warps/WarpSignsManagerTest.java
index bbb8efc..44a47f9 100644
--- a/src/test/java/world/bentobox/warps/WarpSignsManagerTest.java
+++ b/src/test/java/world/bentobox/warps/WarpSignsManagerTest.java
@@ -157,6 +157,7 @@ public class WarpSignsManagerTest {
         PowerMockito.mockStatic(Util.class);
         when(Util.getWorld(any())).thenAnswer((Answer<World>) invocation -> invocation.getArgument(0, World.class));
         when(Util.sameWorld(any(), any())).thenReturn(true);
+        when(Util.translateColorCodes(any())).thenAnswer((Answer<String>) invocation -> invocation.getArgument(0, String.class));
 
         // Location
         when(location.getWorld()).thenReturn(world);
diff --git a/src/test/java/world/bentobox/warps/listeners/WarpSignsListenerTest.java b/src/test/java/world/bentobox/warps/listeners/WarpSignsListenerTest.java
index 978c3d8..3e09509 100644
--- a/src/test/java/world/bentobox/warps/listeners/WarpSignsListenerTest.java
+++ b/src/test/java/world/bentobox/warps/listeners/WarpSignsListenerTest.java
@@ -166,6 +166,7 @@ public class WarpSignsListenerTest {
         PowerMockito.mockStatic(Util.class);
         when(Util.getWorld(any())).thenReturn(world);
         when(Util.stripSpaceAfterColorCodes(anyString())).thenAnswer(invocation -> invocation.getArgument(0, String.class));
+        when(Util.translateColorCodes(any())).thenAnswer((Answer<String>) invocation -> invocation.getArgument(0, String.class));
 
         // Locales
         when(lm.get(any(User.class), anyString())).thenAnswer(answer);