diff --git a/src/main/java/io/github/thebusybiscuit/slimefun4/utils/PatternUtils.java b/src/main/java/io/github/thebusybiscuit/slimefun4/utils/PatternUtils.java
index 3063f55f1..96b8bd1c3 100644
--- a/src/main/java/io/github/thebusybiscuit/slimefun4/utils/PatternUtils.java
+++ b/src/main/java/io/github/thebusybiscuit/slimefun4/utils/PatternUtils.java
@@ -20,7 +20,7 @@ public final class PatternUtils {
 
     public static final Pattern SLASH_SEPARATOR = Pattern.compile(" / ");
 
-    public static final Pattern MINECRAFT_NAMESPACEDKEY = Pattern.compile("minecraft:[a-z_]+");
+    public static final Pattern MINECRAFT_NAMESPACEDKEY = Pattern.compile("minecraft:[a-z0-9/._-]+");
 
     public static final Pattern MINECRAFT_TAG = Pattern.compile("#minecraft:[a-z_]+");
     public static final Pattern SLIMEFUN_TAG = Pattern.compile("#slimefun:[a-z_]+");