diff --git a/src/misc.cpp b/src/misc.cpp
index 9a9d0dda..06ab7c9e 100644
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -58,7 +58,7 @@ using namespace std;
 /// Version number. If this is left empty, the current date (in the format
 /// YYMMDD) is used as a version number.
 
-static const string EngineVersion = "";
+static const string EngineVersion = "1.9.1";
 static const string AppName = "Stockfish";
 static const string AppTag  = "";