diff --git a/README.md b/README.md
index 19004a8..80d1e05 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,13 @@ Applies env.json operations to Minecraft Vanilla data types.
         "type": "any", // passes if at least one rule passes
         "rule": [] // the rules
       },
+      {
+        "type": "not", // reverses the rule
+        "rule": { // the rule
+          "type": "...",
+          "rule": "..."
+        }
+      },
       {
         "type": "dimension", // passes if the current dimension matches this one
         "rule": "minecraft:overworld" // the dimension, can also be a tag
diff --git a/src/main/java/fr/firstmegagame4/env/json/api/rule/EnvJsonRule.java b/src/main/java/fr/firstmegagame4/env/json/api/rule/EnvJsonRule.java
index 4f68b56..c8dfadf 100644
--- a/src/main/java/fr/firstmegagame4/env/json/api/rule/EnvJsonRule.java
+++ b/src/main/java/fr/firstmegagame4/env/json/api/rule/EnvJsonRule.java
@@ -25,6 +25,11 @@ enum Type {
 		 */
 		ANY,
 
+		/**
+		 * Reverses the rule.
+		 */
+		NOT,
+
 		/**
 		 * Represents a dimension rule where the object should be.
 		 */
diff --git a/src/main/java/fr/firstmegagame4/env/json/api/rule/NotEnvJsonRule.java b/src/main/java/fr/firstmegagame4/env/json/api/rule/NotEnvJsonRule.java
new file mode 100644
index 0000000..4241c0d
--- /dev/null
+++ b/src/main/java/fr/firstmegagame4/env/json/api/rule/NotEnvJsonRule.java
@@ -0,0 +1,6 @@
+package fr.firstmegagame4.env.json.api.rule;
+
+public interface NotEnvJsonRule extends EnvJsonRule {
+
+	EnvJsonRule rule();
+}
diff --git a/src/main/java/fr/firstmegagame4/env/json/impl/EnvJsonParser.java b/src/main/java/fr/firstmegagame4/env/json/impl/EnvJsonParser.java
index 4d7c2e7..1699f19 100644
--- a/src/main/java/fr/firstmegagame4/env/json/impl/EnvJsonParser.java
+++ b/src/main/java/fr/firstmegagame4/env/json/impl/EnvJsonParser.java
@@ -51,6 +51,10 @@ private static AnyEnvJsonRule parseAnyRule(JsonArray list) {
 		return new AnyEnvJsonRuleImpl(EnvJsonParser.parseRules(list));
 	}
 
+	private static NotEnvJsonRule parseNotRule(JsonObject rule) {
+		return new NotEnvJsonRuleImpl(EnvJsonParser.parseRule(EnvJsonRule.Type.valueOf(rule.get("type").getAsString().toUpperCase()), () -> rule.get("rule")));
+	}
+
 	private static DimensionEnvJsonRule parseDimensionRule(String string) {
 		if (string.startsWith("#")) {
 			return new DimensionEnvJsonRuleImpl(EnvJsonUtils.tryParse(RegistryKeys.WORLD, string));
@@ -91,27 +95,28 @@ private static VoidEnvJsonRule parseVoidRule(String string) {
 		return new VoidEnvJsonRuleImpl(VoidEnvJsonRule.Localization.valueOf(string.toUpperCase()));
 	}
 
+	private static EnvJsonRule parseRule(EnvJsonRule.Type type, Supplier<JsonElement> supplier) {
+		return switch (type) {
+			case SEQUENCE -> EnvJsonParser.parseSequenceRule(supplier.get().getAsJsonArray());
+			case ANY -> EnvJsonParser.parseAnyRule(supplier.get().getAsJsonArray());
+			case NOT -> EnvJsonParser.parseNotRule(supplier.get().getAsJsonObject());
+			case DIMENSION -> EnvJsonParser.parseDimensionRule(supplier.get().getAsString());
+			case BIOME -> EnvJsonParser.parseBiomeRule(supplier.get().getAsString());
+			case X_COORD -> EnvJsonParser.parseCoordRule(CoordEnvJsonRule.Coord.X, supplier.get().getAsJsonObject());
+			case Y_COORD -> EnvJsonParser.parseCoordRule(CoordEnvJsonRule.Coord.Y, supplier.get().getAsJsonObject());
+			case Z_COORD -> EnvJsonParser.parseCoordRule(CoordEnvJsonRule.Coord.Z, supplier.get().getAsJsonObject());
+			case SUBMERGED -> EnvJsonParser.parseSubmergedRule(supplier.get().getAsBoolean());
+			case SKY -> EnvJsonParser.parseSkyRule(supplier.get().getAsString());
+			case WATER -> EnvJsonParser.parseWaterRule(supplier.get().getAsString());
+			case VOID -> EnvJsonParser.parseVoidRule(supplier.get().getAsString());
+		};
+	}
+
 	private static List<EnvJsonRule> parseRules(JsonArray array) {
 		List<EnvJsonRule> rules = new ArrayList<>();
 		for (JsonElement element : array) {
 			JsonObject rule = element.getAsJsonObject();
-			EnvJsonRule.Type type = EnvJsonRule.Type.valueOf(rule.get("type").getAsString().toUpperCase());
-			Supplier<JsonElement> supplier = () -> rule.get("rule");
-			rules.add(
-				switch (type) {
-					case SEQUENCE -> EnvJsonParser.parseSequenceRule(supplier.get().getAsJsonArray());
-					case ANY -> EnvJsonParser.parseAnyRule(supplier.get().getAsJsonArray());
-					case DIMENSION -> EnvJsonParser.parseDimensionRule(supplier.get().getAsString());
-					case BIOME -> EnvJsonParser.parseBiomeRule(supplier.get().getAsString());
-					case X_COORD -> EnvJsonParser.parseCoordRule(CoordEnvJsonRule.Coord.X, supplier.get().getAsJsonObject());
-					case Y_COORD -> EnvJsonParser.parseCoordRule(CoordEnvJsonRule.Coord.Y, supplier.get().getAsJsonObject());
-					case Z_COORD -> EnvJsonParser.parseCoordRule(CoordEnvJsonRule.Coord.Z, supplier.get().getAsJsonObject());
-					case SUBMERGED -> EnvJsonParser.parseSubmergedRule(supplier.get().getAsBoolean());
-					case SKY -> EnvJsonParser.parseSkyRule(supplier.get().getAsString());
-					case WATER -> EnvJsonParser.parseWaterRule(supplier.get().getAsString());
-					case VOID -> EnvJsonParser.parseVoidRule(supplier.get().getAsString());
-				}
-			);
+			rules.add(EnvJsonParser.parseRule(EnvJsonRule.Type.valueOf(rule.get("type").getAsString().toUpperCase()), () -> rule.get("rule")));
 		}
 		return rules;
 	}
diff --git a/src/main/java/fr/firstmegagame4/env/json/impl/rule/NotEnvJsonRuleImpl.java b/src/main/java/fr/firstmegagame4/env/json/impl/rule/NotEnvJsonRuleImpl.java
new file mode 100644
index 0000000..741dfb0
--- /dev/null
+++ b/src/main/java/fr/firstmegagame4/env/json/impl/rule/NotEnvJsonRuleImpl.java
@@ -0,0 +1,27 @@
+package fr.firstmegagame4.env.json.impl.rule;
+
+import fr.firstmegagame4.env.json.api.EnvJsonVisitor;
+import fr.firstmegagame4.env.json.api.rule.EnvJsonRule;
+import fr.firstmegagame4.env.json.api.rule.NotEnvJsonRule;
+import org.jetbrains.annotations.ApiStatus;
+
+@ApiStatus.Internal
+public class NotEnvJsonRuleImpl extends EnvJsonRuleImpl implements NotEnvJsonRule {
+
+	private final EnvJsonRule rule;
+
+	public NotEnvJsonRuleImpl(EnvJsonRule rule) {
+		super(Type.NOT);
+		this.rule = rule;
+	}
+
+	@Override
+	public EnvJsonRule rule() {
+		return this.rule;
+	}
+
+	@Override
+	public boolean apply(EnvJsonVisitor visitor) {
+		return !this.rule.apply(visitor);
+	}
+}