diff --git a/easy-rules-core/src/main/java/org/jeasy/rules/api/Rules.java b/easy-rules-core/src/main/java/org/jeasy/rules/api/Rules.java
index 7623793..b7dfd38 100644
--- a/easy-rules-core/src/main/java/org/jeasy/rules/api/Rules.java
+++ b/easy-rules-core/src/main/java/org/jeasy/rules/api/Rules.java
@@ -65,29 +65,43 @@ public class Rules implements Iterable<Rule> {
      * @param rules to register
      */
     public Rules(Object... rules) {
-        for (Object rule : rules) {
-            this.register(rule);
-        }
+        this.register(rules);
     }
 
     /**
      * Register a new rule.
      *
-     * @param rule to register, must not be null
+     * @param rules to register, must not be null
      */
-    public void register(Object rule) {
-        Objects.requireNonNull(rule);
-        rules.add(RuleProxy.asRule(rule));
+    public void register(Object... rules) {
+        Objects.requireNonNull(rules);
+        for (Object rule : rules) {
+            Objects.requireNonNull(rule);
+            this.rules.add(RuleProxy.asRule(rule));
+        }
     }
 
     /**
      * Unregister a rule.
      *
-     * @param rule to unregister, must not be null
+     * @param rules to unregister, must not be null
+     */
+    public void unregister(Object... rules) {
+        Objects.requireNonNull(rules);
+        for (Object rule : rules) {
+            Objects.requireNonNull(rule);
+            this.rules.remove(RuleProxy.asRule(rule));
+        }
+    }
+
+    /**
+     * Unregister a set of rules.
+     *
+     * @param rulesSet set to unregister, must not be null
      */
-    public void unregister(Object rule) {
-        Objects.requireNonNull(rule);
-        rules.remove(RuleProxy.asRule(rule));
+    public void unregisterAll(Set<?> rulesSet) {
+        Objects.requireNonNull(rulesSet);
+        rulesSet.forEach(this::unregister);
     }
 
     /**
diff --git a/easy-rules-core/src/test/java/org/jeasy/rules/api/RulesTest.java b/easy-rules-core/src/test/java/org/jeasy/rules/api/RulesTest.java
index 0571c0a..297a1bc 100644
--- a/easy-rules-core/src/test/java/org/jeasy/rules/api/RulesTest.java
+++ b/easy-rules-core/src/test/java/org/jeasy/rules/api/RulesTest.java
@@ -129,14 +129,33 @@ public class RulesTest {
         assertThat(rules.size()).isEqualTo(0);
     }
 
-    @Test(expected = NullPointerException.class)
-    public void whenRegisterNullRule_thenShouldThrowNullPointerException() {
-        rules.register(null);
+    @Test
+    public void register_multiple() {
+        rules.register(new BasicRule("ruleA"), new BasicRule("ruleB"));
+        assertThat(rules.size()).isEqualTo(2);
+    }
+
+    @Test
+    public void unregister_noneLeft() {
+        rules.register(new BasicRule("ruleA"), new BasicRule("ruleB"));
+        assertThat(rules.size()).isEqualTo(2);
+
+        rules.unregister(new BasicRule("ruleA"), new BasicRule("ruleB"));
+        assertThat(rules.size()).isEqualTo(0);
+    }
+
+    @Test
+    public void unregisterAll_oneLeft() {
+        rules.register(new BasicRule("ruleA"), new BasicRule("ruleB"));
+        assertThat(rules.size()).isEqualTo(2);
+
+        rules.unregister(new BasicRule("ruleA"));
+        assertThat(rules.size()).isEqualTo(1);
     }
 
     @Test(expected = NullPointerException.class)
-    public void whenUnregisterNullRule_thenShouldThrowNullPointerException() {
-        rules.unregister(null);
+    public void whenRegisterNullRule_thenShouldThrowNullPointerException() {
+        rules.register(null);
     }
 
     @org.jeasy.rules.annotation.Rule
@@ -147,5 +166,4 @@ public class RulesTest {
         @Action
         public void then() { }
     }
-
 }