diff --git a/src/TKBO/EXTERNLIB b/src/TKBO/EXTERNLIB
index 7e5ed3673d..e19e2b474b 100755
--- a/src/TKBO/EXTERNLIB
+++ b/src/TKBO/EXTERNLIB
@@ -6,4 +6,5 @@ TKG2d
 TKG3d
 TKGeomAlgo
 TKGeomBase
-TKPrim
\ No newline at end of file
+TKPrim
+CSF_TBB
\ No newline at end of file
diff --git a/src/TKMath/EXTERNLIB b/src/TKMath/EXTERNLIB
index 58c24f0d95..799bf4ad2c 100755
--- a/src/TKMath/EXTERNLIB
+++ b/src/TKMath/EXTERNLIB
@@ -1 +1,2 @@
 TKernel
+CSF_TBB
\ No newline at end of file