diff --git a/spring-restdocs-core/build.gradle b/spring-restdocs-core/build.gradle
index 9f0977ae..47aa151b 100644
--- a/spring-restdocs-core/build.gradle
+++ b/spring-restdocs-core/build.gradle
@@ -61,4 +61,11 @@ artifacts {
 
 test {
 	jvmArgs "-javaagent:${configurations.jacoco.asPath}=destfile=${buildDir}/jacoco.exec,includes=org.springframework.restdocs.*,excludes=org.springframework.restdocs.mustache.*"
+}
+
+matrixTest {
+	springFramework {
+		group = 'org.springframework'
+		versions = ['5.1.0.BUILD-SNAPSHOT']
+	}
 }
\ No newline at end of file
diff --git a/spring-restdocs-mockmvc/build.gradle b/spring-restdocs-mockmvc/build.gradle
index 5baca9c2..49c0f19c 100644
--- a/spring-restdocs-mockmvc/build.gradle
+++ b/spring-restdocs-mockmvc/build.gradle
@@ -16,4 +16,11 @@ dependencies {
 
 test {
 	jvmArgs "-javaagent:${configurations.jacoco.asPath}=destfile=${buildDir}/jacoco.exec,includes=org.springframework.restdocs.*"
+}
+
+matrixTest {
+	springFramework {
+		group = 'org.springframework'
+		versions = ['5.1.0.BUILD-SNAPSHOT']
+	}
 }
\ No newline at end of file
diff --git a/spring-restdocs-mockmvc/src/main/java/org/springframework/restdocs/mockmvc/MockMvcRequestConverter.java b/spring-restdocs-mockmvc/src/main/java/org/springframework/restdocs/mockmvc/MockMvcRequestConverter.java
index 45e0a9ba..bfaeaaff 100644
--- a/spring-restdocs-mockmvc/src/main/java/org/springframework/restdocs/mockmvc/MockMvcRequestConverter.java
+++ b/spring-restdocs-mockmvc/src/main/java/org/springframework/restdocs/mockmvc/MockMvcRequestConverter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2017 the original author or authors.
+ * Copyright 2014-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -81,8 +81,8 @@ class MockMvcRequestConverter implements RequestConverter<MockHttpServletRequest
 							getRequestUri(mockRequest) + (StringUtils.hasText(queryString)
 									? "?" + queryString : "")),
 					HttpMethod.valueOf(mockRequest.getMethod()),
-					FileCopyUtils.copyToByteArray(mockRequest.getInputStream()), headers,
-					parameters, parts, cookies);
+					mockRequest.getContentAsByteArray(), headers, parameters, parts,
+					cookies);
 		}
 		catch (Exception ex) {
 			throw new ConversionException(ex);
diff --git a/spring-restdocs-webtestclient/build.gradle b/spring-restdocs-webtestclient/build.gradle
index ed61407b..ce63d379 100644
--- a/spring-restdocs-webtestclient/build.gradle
+++ b/spring-restdocs-webtestclient/build.gradle
@@ -14,4 +14,11 @@ dependencies {
 
 test {
 	jvmArgs "-javaagent:${configurations.jacoco.asPath}=destfile=${buildDir}/jacoco.exec,includes=org.springframework.restdocs.*"
+}
+
+matrixTest {
+	springFramework {
+		group = 'org.springframework'
+		versions = ['5.1.0.BUILD-SNAPSHOT']
+	}
 }
\ No newline at end of file