diff --git a/package.json b/package.json
index 94e2c4c93..c3c33d167 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "lodash": "^3.5.0",
     "mocha": "^2.1.0",
     "request": "^2.47.0",
-    "ripple-lib": "0.13.0-rc6",
+    "ripple-lib": "0.13.0-rc6.0",
     "simple-jsonrpc": "~0.0.2"
   },
   "scripts": {
diff --git a/src/ripple/app/ledger/impl/LedgerMaster.cpp b/src/ripple/app/ledger/impl/LedgerMaster.cpp
index e3aa053a5..f44ef6b33 100644
--- a/src/ripple/app/ledger/impl/LedgerMaster.cpp
+++ b/src/ripple/app/ledger/impl/LedgerMaster.cpp
@@ -313,7 +313,7 @@ public:
         mHeldTransactions.insert (transaction->getSTransaction ());
     }
 
-    void switchLCL (Ledger::pointer lastClosed)
+    void switchLCL (Ledger::pointer lastClosed) override
     {
         assert (lastClosed);
 
@@ -336,7 +336,8 @@ public:
         }
     }
 
-    bool fixIndex (LedgerIndex ledgerIndex, LedgerHash const& ledgerHash)
+    bool
+    fixIndex (LedgerIndex ledgerIndex, LedgerHash const& ledgerHash) override
     {
         return mLedgerHistory.fixIndex (ledgerIndex, ledgerHash);
     }
@@ -1283,7 +1284,7 @@ public:
     }
 
     // The current ledger is the ledger we believe new transactions should go in
-    std::shared_ptr<ReadView const> getCurrentLedger ()
+    std::shared_ptr<ReadView const> getCurrentLedger () override
     {
         return app_.openLedger().current();
     }