diff --git a/proxies/live/apiproxy/policies/AssignMessage.SetRequestAWSMimeType.xml b/proxies/live/apiproxy/policies/AssignMessage.SetRequestAWSMimeType.xml
new file mode 100644
index 0000000..8feb91e
--- /dev/null
+++ b/proxies/live/apiproxy/policies/AssignMessage.SetRequestAWSMimeType.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<AssignMessage async="false" continueOnError="false" enabled="true" name="SetRequestAWSMimeType">
+    <DisplayName>Set Request AWS Mime Type</DisplayName>
+    <Set>
+        <Headers>
+            <Header name="Content-Type">application/json</Header>
+        </Headers>
+    </Set>
+    <IgnoreUnresolvedVariables>true</IgnoreUnresolvedVariables>
+    <AssignTo createNew="false" transport="http" type="response"/>
+</AssignMessage>
diff --git a/proxies/live/apiproxy/targets/target.xml b/proxies/live/apiproxy/targets/target.xml
index 342389f..cb1a712 100644
--- a/proxies/live/apiproxy/targets/target.xml
+++ b/proxies/live/apiproxy/targets/target.xml
@@ -17,6 +17,10 @@
             <Step>
                 <Name>AddUserNHSNumber</Name>
             </Step>
+            <Step>
+                <Name>SetRequestAWSMimeType</Name>
+                <Condition>request.header.Content-Type = "application/fhir+json"</Condition>
+            </Step>
         </Request>
     </PreFlow>
     <PostFlow>