diff --git a/docs/Makefile b/docs/Makefile
index 3790fb8..89384a1 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -1,3 +1,5 @@
+SHELL = /bin/bash
+
 docs:
 	find -name '*.md' | while read -r line; \
 	do \