diff --git a/.shellcheckrc b/.shellcheckrc
new file mode 100644
index 0000000..2a96295
--- /dev/null
+++ b/.shellcheckrc
@@ -0,0 +1,3 @@
+# Let shellcheck follow `. "$(dirname ...)/../env.sh"` relative to each script.
+source-path=SCRIPTDIR
+external-sources=true