diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..31ca173
--- /dev/null
+++ b/.envrc
@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+# ^ added for shellcheck and file-type detection
+
+# Watch & reload direnv on change
+watch_file devshell.toml
+
+if [[ $(type -t use_flake) != function ]]; then
+  echo "ERROR: use_flake function missing."
+  echo "Please update direnv to v2.30.0 or later."
+  exit 1
+fi
+use flake
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index ecff956..d421232 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 .vscode
+.direnv
 out
 node_modules
 certs