diff --git a/.gitignore b/.gitignore
index 2b3e19b..3e9b530 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,6 +22,4 @@ erl_crash.dump
 # Ignore package tarball (built via "mix hex.build").
 ash_graphql-*.tar
 
-.tool-versions
-
-.vscode/
\ No newline at end of file
+.vscode/
diff --git a/.tool-versions b/.tool-versions
new file mode 100644
index 0000000..55e53bf
--- /dev/null
+++ b/.tool-versions
@@ -0,0 +1,2 @@
+erlang 25.2.2
+elixir 1.14.3