diff --git a/docs/pom.xml b/docs/pom.xml
index 25c59597..5125edd7 100644
--- a/docs/pom.xml
+++ b/docs/pom.xml
@@ -15,7 +15,7 @@
 	<properties>
 		<docs.main>spring-cloud-openfeign</docs.main>
 		<main.basedir>${basedir}/..</main.basedir>
-		<docs.whitelisted.branches>2.0.x</docs.whitelisted.branches>
+		<docs.whitelisted.branches>2.0.x,2.1.x</docs.whitelisted.branches>
 	</properties>
 	<build>
 		<plugins>
diff --git a/docs/src/main/asciidoc/sagan-boot.adoc b/docs/src/main/asciidoc/sagan-boot.adoc
new file mode 100644
index 00000000..e69de29b
diff --git a/docs/src/main/asciidoc/sagan-index.adoc b/docs/src/main/asciidoc/sagan-index.adoc
new file mode 100644
index 00000000..b58ff33c
--- /dev/null
+++ b/docs/src/main/asciidoc/sagan-index.adoc
@@ -0,0 +1,26 @@
+This project provides https://github.com/OpenFeign/feign[OpenFeign] integrations for Spring Boot apps through autoconfiguration and binding to the Spring Environment and other Spring programming model idioms.
+
+## Features
+
+* Declarative REST Client: Feign creates a dynamic implementation of an interface decorated with JAX-RS or Spring MVC annotations
+
+## Getting Started
+
+
+```java
+@SpringBootApplication
+@EnableFeignClients
+public class WebApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(WebApplication.class, args);
+	}
+
+	@FeignClient("name")
+	static interface NameService {
+		@RequestMapping("/")
+		public String getName();
+	}
+}
+
+```
diff --git a/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/support/FeignUtils.java b/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/support/FeignUtils.java
index af24d7ac..db2247d2 100644
--- a/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/support/FeignUtils.java
+++ b/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/support/FeignUtils.java
@@ -56,7 +56,8 @@ public final class FeignUtils {
 
 	static Collection<String> addTemplateParameter(Collection<String> possiblyNull,
 			String paramName) {
-		Collection<String> params = ofNullable(possiblyNull).orElse(new ArrayList<>());
+		Collection<String> params = ofNullable(possiblyNull).map(ArrayList::new)
+				.orElse(new ArrayList<>());
 		params.add(String.format("{%s}", paramName));
 		return params;
 	}
diff --git a/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/support/SpringDecoder.java b/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/support/SpringDecoder.java
index 77bd0ede..0a79a47e 100644
--- a/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/support/SpringDecoder.java
+++ b/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/support/SpringDecoder.java
@@ -58,7 +58,7 @@ public class SpringDecoder implements Decoder {
 
 			return extractor.extractData(new FeignResponseAdapter(response));
 		}
-		throw new DecodeException(
+		throw new DecodeException(response.status(),
 				"type is not an instance of Class or ParameterizedType: " + type);
 	}
 
diff --git a/spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/support/SpringMvcContractTests.java b/spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/support/SpringMvcContractTests.java
index f6c0ffac..fabae102 100644
--- a/spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/support/SpringMvcContractTests.java
+++ b/spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/support/SpringMvcContractTests.java
@@ -523,6 +523,18 @@ public class SpringMvcContractTests {
 		this.contract.parseAndValidateMetadata(method.getDeclaringClass(), method);
 	}
 
+	@Test
+	public void testAddingTemplatedParameterWithTheSameKey()
+			throws NoSuchMethodException {
+		Method method = TestTemplate_Advanced.class.getDeclaredMethod(
+				"testAddingTemplatedParamForExistingKey", String.class);
+		MethodMetadata data = contract
+				.parseAndValidateMetadata(method.getDeclaringClass(), method);
+
+		assertThat(data.template().headers().get("Accept")).contains("application/json",
+				"{Accept}");
+	}
+
 	public interface TestTemplate_Simple {
 
 		@RequestMapping(value = "/test/{id}", method = RequestMethod.GET,
@@ -653,6 +665,10 @@ public class SpringMvcContractTests {
 				produces = MediaType.APPLICATION_JSON_VALUE)
 		TestObject getTest();
 
+		@GetMapping(produces = "application/json")
+		String testAddingTemplatedParamForExistingKey(
+				@RequestHeader("Accept") String accept);
+
 	}
 
 	public interface TestTemplate_DateTimeFormatParameter {
diff --git a/spring-cloud-openfeign-dependencies/pom.xml b/spring-cloud-openfeign-dependencies/pom.xml
index 86064cce..82fa7c46 100644
--- a/spring-cloud-openfeign-dependencies/pom.xml
+++ b/spring-cloud-openfeign-dependencies/pom.xml
@@ -15,8 +15,8 @@
 	<name>spring-cloud-openfeign-dependencies</name>
 	<description>Spring Cloud OpenFeign Dependencies</description>
 	<properties>
-		<feign.version>10.1.0</feign.version>
-		<feign-form.version>3.5.0</feign-form.version>
+		<feign.version>10.2.3</feign.version>
+		<feign-form.version>3.8.0</feign-form.version>
 	</properties>
 	<dependencyManagement>
 		<dependencies>