diff --git a/libraries/chain/include/graphene/chain/config.hpp b/libraries/chain/include/graphene/chain/config.hpp
index 79789ff1..becf73d6 100644
--- a/libraries/chain/include/graphene/chain/config.hpp
+++ b/libraries/chain/include/graphene/chain/config.hpp
@@ -151,7 +151,7 @@
 #define GRAPHENE_RECENTLY_MISSED_COUNT_INCREMENT             4
 #define GRAPHENE_RECENTLY_MISSED_COUNT_DECREMENT             3
 
-#define GRAPHENE_CURRENT_DB_VERSION                          "PPY2.1"
+#define GRAPHENE_CURRENT_DB_VERSION                          "PPY2.2"
 
 #define GRAPHENE_IRREVERSIBLE_THRESHOLD                      (70 * GRAPHENE_1_PERCENT)
 
diff --git a/libraries/chain/include/graphene/chain/event_group_object.hpp b/libraries/chain/include/graphene/chain/event_group_object.hpp
index 38fb9f2d..75d26ff8 100644
--- a/libraries/chain/include/graphene/chain/event_group_object.hpp
+++ b/libraries/chain/include/graphene/chain/event_group_object.hpp
@@ -27,7 +27,6 @@
 #include <graphene/db/object.hpp>
 #include <graphene/db/generic_index.hpp>
 
-#include <boost/multi_index/composite_key.hpp>
 
 namespace graphene { namespace chain {
 
diff --git a/libraries/chain/include/graphene/chain/event_object.hpp b/libraries/chain/include/graphene/chain/event_object.hpp
index c8c9b493..530f0bef 100644
--- a/libraries/chain/include/graphene/chain/event_object.hpp
+++ b/libraries/chain/include/graphene/chain/event_object.hpp
@@ -29,7 +29,6 @@
 #include <graphene/chain/protocol/event.hpp>
 #include <sstream>
 
-#include <boost/multi_index/composite_key.hpp>
 
 namespace graphene { namespace chain {
    class event_object;