1 files changed, 1 insertions, 0 deletions

diff --git a/math/Makefile b/math/Makefile
index b344ab91342d..70083241a92e 100644
--- a/math/Makefile
+++ b/math/Makefile
@@ -601,6 +601,7 @@
     SUBDIR += py-graphillion
     SUBDIR += py-gsl
     SUBDIR += py-igraph
+    SUBDIR += py-intspan
     SUBDIR += py-luminol
     SUBDIR += py-mathdom
     SUBDIR += py-matplotlib