diff --git a/API/pom.xml b/API/pom.xml
index 7645b8fe..6cfba2a1 100644
--- a/API/pom.xml
+++ b/API/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>parent</artifactId>
         <groupId>com.willfp.ecoenchants</groupId>
-        <version>4.1.0-pre19</version>
+        <version>4.1.0-pre20</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/NMS/v1_15_R1/pom.xml b/NMS/v1_15_R1/pom.xml
index f7e9a759..08e8621a 100644
--- a/NMS/v1_15_R1/pom.xml
+++ b/NMS/v1_15_R1/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>parent</artifactId>
         <groupId>com.willfp.ecoenchants</groupId>
-        <version>4.1.0-pre19</version>
+        <version>4.1.0-pre20</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/NMS/v1_16_R1/pom.xml b/NMS/v1_16_R1/pom.xml
index 4101d1f2..0e5bcccb 100644
--- a/NMS/v1_16_R1/pom.xml
+++ b/NMS/v1_16_R1/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>parent</artifactId>
         <groupId>com.willfp.ecoenchants</groupId>
-        <version>4.1.0-pre19</version>
+        <version>4.1.0-pre20</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/NMS/v1_16_R2/pom.xml b/NMS/v1_16_R2/pom.xml
index dcde0c8a..7f1ca7f0 100644
--- a/NMS/v1_16_R2/pom.xml
+++ b/NMS/v1_16_R2/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>parent</artifactId>
         <groupId>com.willfp.ecoenchants</groupId>
-        <version>4.1.0-pre19</version>
+        <version>4.1.0-pre20</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/Plugin/pom.xml b/Plugin/pom.xml
index e6245e71..fd22d7c5 100644
--- a/Plugin/pom.xml
+++ b/Plugin/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <artifactId>parent</artifactId>
         <groupId>com.willfp.ecoenchants</groupId>
-        <version>4.1.0-pre19</version>
+        <version>4.1.0-pre20</version>
     </parent>
 
     <artifactId>plugin</artifactId>
diff --git a/Plugin/src/main/java/com/willfp/ecoenchants/enchantments/ecoenchants/normal/Voltage.java b/Plugin/src/main/java/com/willfp/ecoenchants/enchantments/ecoenchants/normal/Voltage.java
index 7aa5af09..c2b86d6d 100644
--- a/Plugin/src/main/java/com/willfp/ecoenchants/enchantments/ecoenchants/normal/Voltage.java
+++ b/Plugin/src/main/java/com/willfp/ecoenchants/enchantments/ecoenchants/normal/Voltage.java
@@ -57,6 +57,7 @@ public class Voltage extends EcoEnchant {
 
         int pieces = 0;
         for (ItemStack armorPiece : equipment.getArmorContents()) {
+            if(armorPiece == null) continue;
             if(Arrays.asList(items).contains(armorPiece.getType())) pieces++;
         }
 
diff --git a/pom.xml b/pom.xml
index 68f77e95..9a9f46bc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>com.willfp.ecoenchants</groupId>
     <artifactId>parent</artifactId>
-    <version>4.1.0-pre19</version>
+    <version>4.1.0-pre20</version>
     <packaging>pom</packaging>
     <name>EcoEnchants Parent</name>