diff --git a/.gitignore b/.gitignore
index 98a1f2f..f5a7178 100644
--- a/.gitignore
+++ b/.gitignore
@@ -29,6 +29,3 @@ exqlite-*.tar
 /tmp
 
 *.db
-
-# ADR files
-.tool-versions
\ No newline at end of file
diff --git a/.tool-versions b/.tool-versions
new file mode 100644
index 0000000..dd1dbfc
--- /dev/null
+++ b/.tool-versions
@@ -0,0 +1,2 @@
+erlang 26.2.2
+elixir 1.16.2-otp-26