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-rw-r--r--src/include/libpq/pqcomm.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/include/libpq/pqcomm.h b/src/include/libpq/pqcomm.h
index c6bbfc23772..96484227f7e 100644
--- a/src/include/libpq/pqcomm.h
+++ b/src/include/libpq/pqcomm.h
@@ -107,7 +107,7 @@ typedef struct
/* The earliest and latest frontend/backend protocol version supported. */
-#define PG_PROTOCOL_EARLIEST PG_PROTOCOL(1,0)
+#define PG_PROTOCOL_EARLIEST PG_PROTOCOL(2,0)
#define PG_PROTOCOL_LATEST PG_PROTOCOL(3,0)
typedef uint32 ProtocolVersion; /* FE/BE protocol version number */