diff --git a/pom.xml b/pom.xml
index 44951d8..5e6ee5d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -57,7 +57,7 @@
         <!-- Non-minecraft related dependencies -->
         <powermock.version>2.0.9</powermock.version>
         <!-- More visible way how to change dependency versions -->
-        <spigot.version>1.19.4-R0.1-SNAPSHOT</spigot.version>
+        <spigot.version>1.20.4-R0.1-SNAPSHOT</spigot.version>
         <bentobox.version>2.0.0-SNAPSHOT</bentobox.version>
         <!-- Revision variable removes warning about dynamic version -->
         <revision>${build.version}-SNAPSHOT</revision>
@@ -258,6 +258,8 @@
                         <!-- This is required to prevent Jacoco from adding 
                             synthetic fields to a JavaBean class (causes errors in testing) -->
                         <exclude>**/*Names*</exclude>
+                        <!-- Prevents the Material is too large to mock error -->
+                        <exclude>org/bukkit/Material*</exclude>
                     </excludes>
                 </configuration>
                 <executions>
diff --git a/src/test/java/bentobox/addon/limits/listeners/JoinListenerTest.java b/src/test/java/bentobox/addon/limits/listeners/JoinListenerTest.java
index 78bd0fa..4359089 100644
--- a/src/test/java/bentobox/addon/limits/listeners/JoinListenerTest.java
+++ b/src/test/java/bentobox/addon/limits/listeners/JoinListenerTest.java
@@ -388,7 +388,7 @@ public class JoinListenerTest {
 	when(permAtt.getValue()).thenReturn(true);
 	perms.add(permAtt);
 	PermissionAttachmentInfo permAtt2 = mock(PermissionAttachmentInfo.class);
-	when(permAtt2.getPermission()).thenReturn("bskyblock.island.limit.grass.14");
+    when(permAtt2.getPermission()).thenReturn("bskyblock.island.limit.short_grass.14");
 	when(permAtt2.getValue()).thenReturn(true);
 	perms.add(permAtt2);
 	PermissionAttachmentInfo permAtt3 = mock(PermissionAttachmentInfo.class);
@@ -413,7 +413,7 @@ public class JoinListenerTest {
 	jl.onPlayerJoin(e);
 	verify(addon, never()).logError(anyString());
 	verify(ibc).setBlockLimit(eq(Material.STONE), eq(24));
-	verify(ibc).setBlockLimit(eq(Material.GRASS), eq(14));
+    verify(ibc).setBlockLimit(eq(Material.SHORT_GRASS), eq(14));
 	verify(ibc).setBlockLimit(eq(Material.DIRT), eq(34));
 	verify(ibc).setEntityLimit(eq(EntityType.CHICKEN), eq(34));
 	verify(ibc).setEntityLimit(eq(EntityType.CAVE_SPIDER), eq(4));