1 files changed, 1 insertions, 1 deletions
diff --git a/Jamroot b/Jamroot
index c285815f57..a917f4725f 100644
--- a/Jamroot
+++ b/Jamroot
@@ -137,7 +137,7 @@ import threadapi-feature ;
 import option ;
 
 path-constant BOOST_ROOT : . ;
-constant BOOST_VERSION : 1.67.0 ;
+constant BOOST_VERSION : 1.66.0 ;
 constant BOOST_JAMROOT_MODULE : $(__name__) ;
 
 boostcpp.set-version $(BOOST_VERSION) ;