diff --git a/src/xrpld/app/misc/ValidatorList.h b/src/xrpld/app/misc/ValidatorList.h
index 4cb32282db..1f5d728824 100644
--- a/src/xrpld/app/misc/ValidatorList.h
+++ b/src/xrpld/app/misc/ValidatorList.h
@@ -226,7 +226,7 @@ class ValidatorList
     TimeKeeper& timeKeeper_;
     boost::filesystem::path const dataPath_;
     beast::Journal const j_;
-    boost::shared_mutex mutable mutex_;
+    std::shared_mutex mutable mutex_;
     using lock_guard = std::lock_guard<decltype(mutex_)>;
     using shared_lock = std::shared_lock<decltype(mutex_)>;
 
diff --git a/src/xrpld/overlay/detail/PeerImp.h b/src/xrpld/overlay/detail/PeerImp.h
index ecd3fc7f63..d5f8e4d179 100644
--- a/src/xrpld/overlay/detail/PeerImp.h
+++ b/src/xrpld/overlay/detail/PeerImp.h
@@ -98,7 +98,7 @@ private:
     // Node public key of peer.
     PublicKey const publicKey_;
     std::string name_;
-    boost::shared_mutex mutable nameMutex_;
+    std::shared_mutex mutable nameMutex_;
 
     // The indices of the smallest and largest ledgers this peer has available
     //
@@ -214,7 +214,7 @@ private:
         total_bytes() const;
 
     private:
-        boost::shared_mutex mutable mutex_;
+        std::shared_mutex mutable mutex_;
         boost::circular_buffer<std::uint64_t> rollingAvg_{30, 0ull};
         clock_type::time_point intervalStart_{clock_type::now()};
         std::uint64_t totalBytes_{0};