diff --git a/membership/src/main/java/net/corda/v5/membership/MGMContext.java b/membership/src/main/java/net/corda/v5/membership/MGMContext.java
index 4ffce49aef..c19a94996c 100644
--- a/membership/src/main/java/net/corda/v5/membership/MGMContext.java
+++ b/membership/src/main/java/net/corda/v5/membership/MGMContext.java
@@ -1,5 +1,6 @@
 package net.corda.v5.membership;
 
+import net.corda.v5.base.annotations.CordaSerializable;
 import net.corda.v5.base.types.LayeredPropertyMap;
 
 /**
@@ -32,4 +33,5 @@
  *
  * @see LayeredPropertyMap for further information on the properties and functions.
  */
+@CordaSerializable
 public interface MGMContext extends LayeredPropertyMap {}
diff --git a/membership/src/main/java/net/corda/v5/membership/MemberContext.java b/membership/src/main/java/net/corda/v5/membership/MemberContext.java
index 306fd1a9ed..39ad8deebf 100644
--- a/membership/src/main/java/net/corda/v5/membership/MemberContext.java
+++ b/membership/src/main/java/net/corda/v5/membership/MemberContext.java
@@ -1,5 +1,6 @@
 package net.corda.v5.membership;
 
+import net.corda.v5.base.annotations.CordaSerializable;
 import net.corda.v5.base.types.LayeredPropertyMap;
 
 /**
@@ -32,4 +33,5 @@
  *
  * @see LayeredPropertyMap For further information on the properties and functions.
  */
+@CordaSerializable
 public interface MemberContext extends LayeredPropertyMap {}