diff --git a/REQUIRE b/REQUIRE
index b2e751d..276ad1b 100644
--- a/REQUIRE
+++ b/REQUIRE
@@ -3,4 +3,5 @@ Images     0.9.1
 ImageFiltering   0.4.1
 Interpolations   0.9
 PyPlot     2.3.0
-DSP        0.5
\ No newline at end of file
+DSP        0.5
+FileIO     1.0
\ No newline at end of file