diff --git a/spring-cloud-contract-dependencies/pom.xml b/spring-cloud-contract-dependencies/pom.xml
index 01961dde62..158f1b598e 100644
--- a/spring-cloud-contract-dependencies/pom.xml
+++ b/spring-cloud-contract-dependencies/pom.xml
@@ -15,7 +15,7 @@
 	<description>Spring Cloud Contract Dependencies</description>
 	<properties>
 		<wiremock.version>2.14.0</wiremock.version>
-		<jsonassert.version>0.4.10</jsonassert.version>
+		<jsonassert.version>0.4.11</jsonassert.version>
 		<aether.version>1.0.2.v20150114</aether.version>
 	</properties>
 	<dependencyManagement>
diff --git a/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/bootSimple/gradle.properties b/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/bootSimple/gradle.properties
index 5c56062557..ea4e488045 100644
--- a/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/bootSimple/gradle.properties
+++ b/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/bootSimple/gradle.properties
@@ -14,6 +14,6 @@
 #  limitations under the License.
 #
 wiremockVersion=2.14.0
-jsonAssertVersion=0.4.10
+jsonAssertVersion=0.4.11
 verifierVersion=1.2.3.BUILD-SNAPSHOT
 
diff --git a/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/sampleJerseyProject/gradle.properties b/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/sampleJerseyProject/gradle.properties
index 53bd752f7e..e41d60e729 100644
--- a/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/sampleJerseyProject/gradle.properties
+++ b/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/sampleJerseyProject/gradle.properties
@@ -14,5 +14,5 @@
 #  limitations under the License.
 #
 wiremockVersion=2.14.0
-jsonAssertVersion=0.4.10
+jsonAssertVersion=0.4.11
 verifierVersion=1.2.3.BUILD-SNAPSHOT
diff --git a/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/sampleProject/gradle.properties b/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/sampleProject/gradle.properties
index 852b5a93ee..725b767c22 100644
--- a/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/sampleProject/gradle.properties
+++ b/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/sampleProject/gradle.properties
@@ -14,5 +14,5 @@
 #  limitations under the License.
 #
 wiremockVersion=2.14.0
-jsonAssertVersion=0.4.10
+jsonAssertVersion=0.4.11
 verifierVersion=1.2.3.BUILD-SNAPSHOT
\ No newline at end of file
diff --git a/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/scenarioProject/gradle.properties b/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/scenarioProject/gradle.properties
index 5c56062557..ea4e488045 100644
--- a/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/scenarioProject/gradle.properties
+++ b/spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/scenarioProject/gradle.properties
@@ -14,6 +14,6 @@
 #  limitations under the License.
 #
 wiremockVersion=2.14.0
-jsonAssertVersion=0.4.10
+jsonAssertVersion=0.4.11
 verifierVersion=1.2.3.BUILD-SNAPSHOT
 
diff --git a/spring-cloud-contract-tools/spring-cloud-contract-maven-plugin/src/test/projects/complex-configuration/pom.xml b/spring-cloud-contract-tools/spring-cloud-contract-maven-plugin/src/test/projects/complex-configuration/pom.xml
index a678e7e0f9..2679f509ba 100644
--- a/spring-cloud-contract-tools/spring-cloud-contract-maven-plugin/src/test/projects/complex-configuration/pom.xml
+++ b/spring-cloud-contract-tools/spring-cloud-contract-maven-plugin/src/test/projects/complex-configuration/pom.xml
@@ -63,7 +63,7 @@
         <dependency>
             <groupId>com.toomuchcoding.jsonassert</groupId>
             <artifactId>jsonassert</artifactId>
-            <version>0.4.10</version>
+            <version>0.4.11</version>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/spring-cloud-contract-tools/spring-cloud-contract-maven-plugin/src/test/projects/different-module-configuration/module/pom.xml b/spring-cloud-contract-tools/spring-cloud-contract-maven-plugin/src/test/projects/different-module-configuration/module/pom.xml
index 9c19e123c6..2af2096c4a 100644
--- a/spring-cloud-contract-tools/spring-cloud-contract-maven-plugin/src/test/projects/different-module-configuration/module/pom.xml
+++ b/spring-cloud-contract-tools/spring-cloud-contract-maven-plugin/src/test/projects/different-module-configuration/module/pom.xml
@@ -62,7 +62,7 @@
         <dependency>
             <groupId>com.toomuchcoding.jsonassert</groupId>
             <artifactId>jsonassert</artifactId>
-            <version>0.4.10</version>
+            <version>0.4.11</version>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/spring-cloud-contract-verifier/src/main/groovy/org/springframework/cloud/contract/verifier/util/DelegatingJsonVerifiable.java b/spring-cloud-contract-verifier/src/main/groovy/org/springframework/cloud/contract/verifier/util/DelegatingJsonVerifiable.java
index 3d73fc6e6e..965f5921b5 100644
--- a/spring-cloud-contract-verifier/src/main/groovy/org/springframework/cloud/contract/verifier/util/DelegatingJsonVerifiable.java
+++ b/spring-cloud-contract-verifier/src/main/groovy/org/springframework/cloud/contract/verifier/util/DelegatingJsonVerifiable.java
@@ -201,6 +201,14 @@ class DelegatingJsonVerifiable implements MethodBufferingJsonVerifiable {
 		return readyToCheck;
 	}
 
+	@Override public JsonVerifiable isInstanceOf(Class clazz)
+			throws IllegalStateException {
+		DelegatingJsonVerifiable readyToCheck = new FinishedDelegatingJsonVerifiable(
+				this.delegate.jsonPath(), this.delegate.isInstanceOf(clazz), this.methodsBuffer);
+		readyToCheck.methodsBuffer.offer(".isInstanceOf(" + clazz.getName() + ")");
+		return readyToCheck;
+	}
+
 	@Override
 	public MethodBufferingJsonVerifiable matches(String value) {
 		DelegatingJsonVerifiable readyToCheck = new FinishedDelegatingJsonVerifiable(
diff --git a/spring-cloud-contract-verifier/src/test/groovy/org/springframework/cloud/contract/verifier/builder/JsonAssertTests.java b/spring-cloud-contract-verifier/src/test/groovy/org/springframework/cloud/contract/verifier/builder/JsonAssertTests.java
new file mode 100644
index 0000000000..f025688541
--- /dev/null
+++ b/spring-cloud-contract-verifier/src/test/groovy/org/springframework/cloud/contract/verifier/builder/JsonAssertTests.java
@@ -0,0 +1,19 @@
+package org.springframework.cloud.contract.verifier.builder;
+
+import com.jayway.jsonpath.DocumentContext;
+import com.jayway.jsonpath.JsonPath;
+import org.junit.Test;
+
+import static com.toomuchcoding.jsonassert.JsonAssertion.assertThatJson;
+
+/**
+ * @author Marcin Grzejszczak
+ */
+public class JsonAssertTests {
+	// #537
+	@Test
+	public void should_compare_big_decimals() {
+		DocumentContext context = JsonPath.parse("{\"foo\": 55534673.56}");
+		assertThatJson(context).field("['foo']").isEqualTo(55534673.57);
+	}
+}