diff --git a/src/core.hpp b/src/core.hpp
index e324895a..6ad30ac7 100644
--- a/src/core.hpp
+++ b/src/core.hpp
@@ -26,7 +26,7 @@ static constexpr auto AUTHENTICATOR_PERIOD = 30U;
 
 // SERVER_MAJOR_VERSION is the actual full version of the server, including minor and patch numbers.
 // This is intended for internal use to identify the exact state of the server (release) software.
-static constexpr auto CLIENT_VERSION = 1405;
+static constexpr auto CLIENT_VERSION = 1340;
 
 #define CLIENT_VERSION_UPPER (CLIENT_VERSION / 100)
 #define CLIENT_VERSION_LOWER (CLIENT_VERSION % 100)