diff --git a/MANIFEST.in b/MANIFEST.in
index f28a117..433cea4 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,3 +1,4 @@
 include src/cppmdlp/CPPFImdlp.h
 include src/cppmdlp/typesFImdlp.h
 include src/cppmdlp/Metrics.h
+include src/fimdlp/Factorize.h
\ No newline at end of file