diff --git a/etc/config.csh/CGAL b/etc/config.csh/CGAL
index aab320bcab30fc98ea0aab5eb6fdf09996f3b989..4f4a5f3c95a2c1748544a9a6bf4a82ad1719d4ee 100644
--- a/etc/config.csh/CGAL
+++ b/etc/config.csh/CGAL
@@ -51,8 +51,8 @@
 #------------------------------------------------------------------------------
 # USER EDITABLE PART: Changes made here may be lost with the next upgrade
 
-set boost_version=boost_1_62_0
-set cgal_version=CGAL-4.9
+set boost_version=boost_1_64_0
+set cgal_version=CGAL-4.9.1
 
 setenv BOOST_ARCH_PATH $WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER/$boost_version
 setenv CGAL_ARCH_PATH $WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER/$cgal_version
diff --git a/etc/config.sh/CGAL b/etc/config.sh/CGAL
index dc97d66a11a029c7165733dcfdd92dcac1c5dfc6..e3acd42cbec347bb3e86d31e4860fb8efac7b6c6 100644
--- a/etc/config.sh/CGAL
+++ b/etc/config.sh/CGAL
@@ -50,8 +50,8 @@
 #------------------------------------------------------------------------------
 # USER EDITABLE PART: Changes made here may be lost with the next upgrade
 
-boost_version=boost_1_62_0
-cgal_version=CGAL-4.9
+boost_version=boost_1_64_0
+cgal_version=CGAL-4.9.1
 
 export BOOST_ARCH_PATH=$WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER/$boost_version
 export CGAL_ARCH_PATH=$WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER/$cgal_version