diff --git a/src/Makefile.dep b/src/Makefile.dep
index b4a13ea..f7d8322 100644
--- a/src/Makefile.dep
+++ b/src/Makefile.dep
@@ -4,6 +4,7 @@ aes.o: aes.h
 base32.o: base32.h
 base64.o: base64.h
 crypto.o: crypto.h aes.h base64.h ../../pikotools/src/utf8/utf8.h
+crypto.o: ../../pikotools/src/textstream/stream.h
 crypto.o: ../../pikotools/src/utf8/utf8_templates.h
 crypto.o: ../../pikotools/src/utf8/utf8_private.h misc.h
 misc.o: misc.h