diff --git a/.gitmodules b/.gitmodules
index 47cf9d0..40a6bad 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -25,3 +25,6 @@
 [submodule "ext/simdcomp"]
 	path = ext/simdcomp
 	url = https://github.com/lemire/simdcomp.git
+[submodule "ext/FastPFor"]
+	path = ext/FastPFor
+	url = https://github.com/lemire/FastPFor
diff --git a/ext/FastPFor b/ext/FastPFor
new file mode 160000
index 0000000..d259705
--- /dev/null
+++ b/ext/FastPFor
@@ -0,0 +1 @@
+Subproject commit d259705c9dc8e6606f6be54ff069f354b2fc1fae