diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000000000..1d953f4bd7359
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use nix
diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 03e33afa3aa4f..86bba354a63bc 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -19,6 +19,7 @@
 # Develompent support
 /.editorconfig @Mic92 @zowoq
 /shell.nix @infinisil @NixOS/Security
+/.envrc @infinisil @NixOS/Security
 
 # Libraries
 /lib                        @infinisil
diff --git a/.gitignore b/.gitignore
index 2753c90738320..db5517cfde910 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,6 +19,7 @@ tags
 /doc/manual.pdf
 /source/
 .version-suffix
+.direnv
 
 .DS_Store
 .mypy_cache