diff --git a/acme4j-client/src/main/java/org/shredzone/acme4j/util/JSON.java b/acme4j-client/src/main/java/org/shredzone/acme4j/util/JSON.java
index fcdb7f98..0f6acbd7 100644
--- a/acme4j-client/src/main/java/org/shredzone/acme4j/util/JSON.java
+++ b/acme4j-client/src/main/java/org/shredzone/acme4j/util/JSON.java
@@ -326,6 +326,21 @@ public final class JSON implements Serializable {
             }
         }
 
+        /**
+         * Returns the value as boolean.
+         *
+         * @return integer value
+         */
+        public boolean asBoolean() {
+            required();
+
+            try {
+                return (Boolean) val;
+            } catch (ClassCastException ex) {
+                throw new AcmeProtocolException(path + ": bad boolean " + val, ex);
+            }
+        }
+
         /**
          * Returns the value as {@link URI}.
          *
diff --git a/acme4j-client/src/test/java/org/shredzone/acme4j/util/JSONTest.java b/acme4j-client/src/test/java/org/shredzone/acme4j/util/JSONTest.java
index c828ae6c..ad5fb34e 100644
--- a/acme4j-client/src/test/java/org/shredzone/acme4j/util/JSONTest.java
+++ b/acme4j-client/src/test/java/org/shredzone/acme4j/util/JSONTest.java
@@ -84,7 +84,7 @@ public class JSONTest {
         JSON json = TestUtils.getJsonAsObject("json");
 
         assertThat(json.keySet(), containsInAnyOrder(
-                    "text", "number", "uri", "url", "date", "array", "collect"));
+                    "text", "number", "boolean", "uri", "url", "date", "array", "collect"));
         assertThat(json.contains("text"), is(true));
         assertThat(json.contains("music"), is(false));
         assertThat(json.get("text"), is(notNullValue()));
@@ -174,6 +174,7 @@ public class JSONTest {
 
         assertThat(json.get("text").asString(), is("lorem ipsum"));
         assertThat(json.get("number").asInt(), is(123));
+        assertThat(json.get("boolean").asBoolean(), is(true));
         assertThat(json.get("uri").asURI(), is(URI.create("mailto:foo@example.com")));
         assertThat(json.get("url").asURL(), is(new URL("http://example.com")));
         assertThat(json.get("date").asInstant(), is(date));
@@ -213,6 +214,13 @@ public class JSONTest {
             // expected
         }
 
+        try {
+            json.get("none").asBoolean();
+            fail("asBoolean did not fail");
+        } catch (AcmeProtocolException ex) {
+            // expected
+        }
+
         try {
             json.get("none").required();
             fail("required did not fail");