diff --git a/.config/yadm/bootstrap.d/002_asdf b/.config/yadm/bootstrap.d/002_asdf
new file mode 100755
index 0000000..4c292d5
--- /dev/null
+++ b/.config/yadm/bootstrap.d/002_asdf
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+. $(brew --prefix asdf)/libexec/asdf.sh
+
+asdf install
diff --git a/.tool-versions b/.tool-versions
new file mode 100644
index 0000000..3f2d4b8
--- /dev/null
+++ b/.tool-versions
@@ -0,0 +1,3 @@
+direnv 2.32.1
+elixir 1.13.4-otp-25
+erlang 25.0.2