diff --git a/pom.xml b/pom.xml
index 87f9045..320a870 100644
--- a/pom.xml
+++ b/pom.xml
@@ -36,7 +36,7 @@
 		<powermock.version>1.7.4</powermock.version>
 		<!-- More visible way how to change dependency versions -->
 		<spigot.version>1.14.4-R0.1-SNAPSHOT</spigot.version>
-		<bentobox.version>1.7.0-SNAPSHOT</bentobox.version>
+		<bentobox.version>1.7.0</bentobox.version>
 		<level.version>1.6.0</level.version>
 		<vault.version>1.7</vault.version>
 		<!-- Revision variable removes warning about dynamic version -->
diff --git a/src/main/java/world/bentobox/challenges/ChallengesAddon.java b/src/main/java/world/bentobox/challenges/ChallengesAddon.java
index 9a4d3a5..7ca6203 100644
--- a/src/main/java/world/bentobox/challenges/ChallengesAddon.java
+++ b/src/main/java/world/bentobox/challenges/ChallengesAddon.java
@@ -1,7 +1,6 @@
 package world.bentobox.challenges;
 
 
-import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import java.util.ArrayList;
 import java.util.List;
@@ -100,14 +99,6 @@ public class ChallengesAddon extends Addon {
 		new Flag.Builder("CHALLENGES_ISLAND_PROTECTION", Material.COMMAND_BLOCK).defaultRank(RanksManager.VISITOR_RANK).build();
 
 
-    /**
-     * This ir ugly way how to fix comparability issues between 1.13 and 1.14 versions.
-     * @deprecated Should be removed as soon as 1.13 support are dropped down.
-     */
-    @Deprecated
-    public static final Material SIGN_MATERIAL = Bukkit.getBukkitVersion().startsWith("1.13") ? Material.getMaterial("SIGN") : Material.getMaterial("OAK_SIGN");
-
-
 // ---------------------------------------------------------------------
 // Section: Methods
 // ---------------------------------------------------------------------
diff --git a/src/main/java/world/bentobox/challenges/panel/CommonGUI.java b/src/main/java/world/bentobox/challenges/panel/CommonGUI.java
index a03d281..e33e8aa 100644
--- a/src/main/java/world/bentobox/challenges/panel/CommonGUI.java
+++ b/src/main/java/world/bentobox/challenges/panel/CommonGUI.java
@@ -273,7 +273,7 @@ public abstract class CommonGUI
         {
             name = this.user.getTranslation("challenges.gui.buttons.next");
             description = Collections.emptyList();
-            icon = new ItemStack(ChallengesAddon.SIGN_MATERIAL);
+            icon = new ItemStack(Material.OAK_SIGN);
             clickHandler = (panel, user, clickType, slot) -> {
                 this.pageIndex++;
                 this.build();
@@ -286,7 +286,7 @@ public abstract class CommonGUI
         {
             name = this.user.getTranslation("challenges.gui.buttons.previous");
             description = Collections.emptyList();
-            icon = new ItemStack(ChallengesAddon.SIGN_MATERIAL);
+            icon = new ItemStack(Material.OAK_SIGN);
             clickHandler = (panel, user, clickType, slot) -> {
                 this.pageIndex--;
                 this.build();
diff --git a/src/main/java/world/bentobox/challenges/panel/admin/EditSettingsGUI.java b/src/main/java/world/bentobox/challenges/panel/admin/EditSettingsGUI.java
index b9f44ec..b1a6b3d 100644
--- a/src/main/java/world/bentobox/challenges/panel/admin/EditSettingsGUI.java
+++ b/src/main/java/world/bentobox/challenges/panel/admin/EditSettingsGUI.java
@@ -455,7 +455,7 @@ public class EditSettingsGUI extends CommonGUI
                             this.user.getTranslation("challenges.gui.descriptions.enabled") :
                                 this.user.getTranslation("challenges.gui.descriptions.disabled")));
             name = this.user.getTranslation("challenges.gui.buttons.admin.title-enable");
-            icon = new ItemStack(ChallengesAddon.SIGN_MATERIAL);
+            icon = new ItemStack(Material.OAK_SIGN);
             clickHandler = (panel, user1, clickType, i) -> {
                 this.settings.setShowCompletionTitle(!this.settings.isShowCompletionTitle());
 
diff --git a/src/main/java/world/bentobox/challenges/panel/user/ChallengesGUI.java b/src/main/java/world/bentobox/challenges/panel/user/ChallengesGUI.java
index cd6fc8c..f29f873 100644
--- a/src/main/java/world/bentobox/challenges/panel/user/ChallengesGUI.java
+++ b/src/main/java/world/bentobox/challenges/panel/user/ChallengesGUI.java
@@ -2,6 +2,7 @@ package world.bentobox.challenges.panel.user;
 
 
 import org.bukkit.ChatColor;
+import org.bukkit.Material;
 import org.bukkit.World;
 import org.bukkit.inventory.ItemStack;
 import java.util.List;
@@ -167,7 +168,7 @@ public class ChallengesGUI extends CommonGUI
 			if (this.freeChallengeIndex > 0)
 			{
 				panelBuilder.item(index++, new PanelItemBuilder().
-					icon(ChallengesAddon.SIGN_MATERIAL).
+					icon(Material.OAK_SIGN).
 					name(this.user.getTranslation("challenges.gui.buttons.previous")).
 					clickHandler((panel, user1, clickType, slot) -> {
 						this.freeChallengeIndex--;
@@ -191,7 +192,7 @@ public class ChallengesGUI extends CommonGUI
 			else if (currentIndex < freeChallengesCount)
 			{
 				panelBuilder.item(index, new PanelItemBuilder().
-					icon(ChallengesAddon.SIGN_MATERIAL).
+					icon(Material.OAK_SIGN).
 					name(this.user.getTranslation("challenges.gui.buttons.next")).
 					clickHandler((panel, user1, clickType, slot) -> {
 						this.freeChallengeIndex++;
@@ -243,7 +244,7 @@ public class ChallengesGUI extends CommonGUI
 				if (this.pageIndex > 0)
 				{
 					panelBuilder.item(index++, new PanelItemBuilder().
-						icon(ChallengesAddon.SIGN_MATERIAL).
+						icon(Material.OAK_SIGN).
 						name(this.user.getTranslation("challenges.gui.buttons.previous")).
 						clickHandler((panel, user1, clickType, slot) -> {
 							this.pageIndex--;
@@ -267,7 +268,7 @@ public class ChallengesGUI extends CommonGUI
 				else if (currentIndex < challengesCount)
 				{
 					panelBuilder.item(index, new PanelItemBuilder().
-						icon(ChallengesAddon.SIGN_MATERIAL).
+						icon(Material.OAK_SIGN).
 						name(this.user.getTranslation("challenges.gui.buttons.next")).
 						clickHandler((panel, user1, clickType, slot) -> {
 							this.pageIndex++;
@@ -304,7 +305,7 @@ public class ChallengesGUI extends CommonGUI
 			if (this.levelIndex > 0)
 			{
 				panelBuilder.item(index++, new PanelItemBuilder().
-					icon(ChallengesAddon.SIGN_MATERIAL).
+					icon(Material.OAK_SIGN).
 					name(this.user.getTranslation("challenges.gui.buttons.previous")).
 					clickHandler((panel, user1, clickType, slot) -> {
 						this.levelIndex--;
@@ -328,7 +329,7 @@ public class ChallengesGUI extends CommonGUI
 			else if (currentIndex < levelCounts)
 			{
 				panelBuilder.item(index, new PanelItemBuilder().
-					icon(ChallengesAddon.SIGN_MATERIAL).
+					icon(Material.OAK_SIGN).
 					name(this.user.getTranslation("challenges.gui.buttons.next")).
 					clickHandler((panel, user1, clickType, slot) -> {
 						this.levelIndex++;
diff --git a/src/main/java/world/bentobox/challenges/panel/util/SelectBlocksGUI.java b/src/main/java/world/bentobox/challenges/panel/util/SelectBlocksGUI.java
index 066cdc2..d7c6855 100644
--- a/src/main/java/world/bentobox/challenges/panel/util/SelectBlocksGUI.java
+++ b/src/main/java/world/bentobox/challenges/panel/util/SelectBlocksGUI.java
@@ -145,7 +145,7 @@ public class SelectBlocksGUI
 
 			panelBuilder.item(18,
 				new PanelItemBuilder().
-					icon(ChallengesAddon.SIGN_MATERIAL).
+					icon(Material.OAK_SIGN).
 					name(this.user.getTranslation("challenges.gui.buttons.previous")).
 					clickHandler((panel, user1, clickType, slot) -> {
 						this.build(correctPage - 1);
@@ -154,7 +154,7 @@ public class SelectBlocksGUI
 
 			panelBuilder.item(26,
 				new PanelItemBuilder().
-					icon(ChallengesAddon.SIGN_MATERIAL).
+					icon(Material.OAK_SIGN).
 					name(this.user.getTranslation("challenges.gui.buttons.next")).
 					clickHandler((panel, user1, clickType, slot) -> {
 						this.build(correctPage + 1);
diff --git a/src/main/java/world/bentobox/challenges/panel/util/SelectChallengeGUI.java b/src/main/java/world/bentobox/challenges/panel/util/SelectChallengeGUI.java
index 3988544..1b37a97 100644
--- a/src/main/java/world/bentobox/challenges/panel/util/SelectChallengeGUI.java
+++ b/src/main/java/world/bentobox/challenges/panel/util/SelectChallengeGUI.java
@@ -76,7 +76,7 @@ public class SelectChallengeGUI
 
 			panelBuilder.item(18,
 				new PanelItemBuilder().
-					icon(ChallengesAddon.SIGN_MATERIAL).
+					icon(Material.OAK_SIGN).
 					name(this.user.getTranslation("challenges.gui.buttons.previous")).
 					clickHandler((panel, user1, clickType, slot) -> {
 						this.build(correctPage - 1);
@@ -85,7 +85,7 @@ public class SelectChallengeGUI
 
 			panelBuilder.item(26,
 				new PanelItemBuilder().
-					icon(ChallengesAddon.SIGN_MATERIAL).
+					icon(Material.OAK_SIGN).
 					name(this.user.getTranslation("challenges.gui.buttons.next")).
 					clickHandler((panel, user1, clickType, slot) -> {
 						this.build(correctPage + 1);
diff --git a/src/main/java/world/bentobox/challenges/panel/util/SelectEntityGUI.java b/src/main/java/world/bentobox/challenges/panel/util/SelectEntityGUI.java
index ad7145e..b4019f6 100644
--- a/src/main/java/world/bentobox/challenges/panel/util/SelectEntityGUI.java
+++ b/src/main/java/world/bentobox/challenges/panel/util/SelectEntityGUI.java
@@ -115,7 +115,7 @@ public class SelectEntityGUI
 
 			panelBuilder.item(18,
 				new PanelItemBuilder().
-					icon(ChallengesAddon.SIGN_MATERIAL).
+					icon(Material.OAK_SIGN).
 					name(this.user.getTranslation("challenges.gui.buttons.previous")).
 					clickHandler((panel, user1, clickType, slot) -> {
 						this.build(correctPage - 1);
@@ -124,7 +124,7 @@ public class SelectEntityGUI
 
 			panelBuilder.item(26,
 				new PanelItemBuilder().
-					icon(ChallengesAddon.SIGN_MATERIAL).
+					icon(Material.OAK_SIGN).
 					name(this.user.getTranslation("challenges.gui.buttons.next")).
 					clickHandler((panel, user1, clickType, slot) -> {
 						this.build(correctPage + 1);