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-rw-r--r--INSTALL2
1 files changed, 1 insertions, 1 deletions
diff --git a/INSTALL b/INSTALL
index ac8338a0e16..fba9609e677 100644
--- a/INSTALL
+++ b/INSTALL
@@ -58,7 +58,7 @@ The following prerequisites exist for building PostgreSQL:
pre-generated output files are included in released packages. You will
need these programs only when building from a CVS tree or if you
changed the actual scanner and parser definition files. If you need
- them, be sure to get Flex 2.5.4 or later and Bison 1.28 or later. Other
+ them, be sure to get Flex 2.5.4 or later and Bison 1.50 or later. Other
yacc programs can sometimes be used, but doing so requires extra effort
and is not recommended. Other lex programs will definitely not work.