diff --git a/.config/fish/conf.d/30-asdf.fish b/.config/fish/conf.d/30-asdf.fish
new file mode 100644
index 0000000..2cc1d5d
--- /dev/null
+++ b/.config/fish/conf.d/30-asdf.fish
@@ -0,0 +1,3 @@
+#!/usr/bin/env fish
+
+source /opt/asdf-vm/asdf.fish
diff --git a/.gitignore b/.gitignore
index 46c5b17..7e820a0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -79,3 +79,4 @@ go/pkg
 .config/systemd/
 .config/tmux/plugins/
 .config/luarocks/lib/
+.asdf/
diff --git a/.plugin-versions b/.plugin-versions
new file mode 100644
index 0000000..fc960a4
--- /dev/null
+++ b/.plugin-versions
@@ -0,0 +1,3 @@
+# plugin-name        git-url                                                    git-ref
+asdf-plugin-manager  https://github.com/asdf-community/asdf-plugin-manager.git  0ea8bb5
+php                  https://github.com/asdf-community/asdf-php.git             1eaf4de
diff --git a/.tool-versions b/.tool-versions
new file mode 100644
index 0000000..fd08e64
--- /dev/null
+++ b/.tool-versions
@@ -0,0 +1,2 @@
+asdf-plugin-manager 1.3.0
+php 8.3.3