diff --git a/dub.sdl b/dub.sdl
index 945afa2..b2f70e4 100644
--- a/dub.sdl
+++ b/dub.sdl
@@ -7,6 +7,8 @@ license "BSD-2-Clause"
 # Only LDC is supported currently.
 toolchainRequirements gdc="no"
 
+dependency "numem" version="~>0.23.7"
+
 targetPath "out/"
 
 # Default configuration.