diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..a63eb96
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use asdf
diff --git a/base/envrc b/base/envrc
new file mode 100644
index 0000000..a63eb96
--- /dev/null
+++ b/base/envrc
@@ -0,0 +1 @@
+use asdf
diff --git a/config/asdf/tool-versions b/base/tool-versions
similarity index 60%
rename from config/asdf/tool-versions
rename to base/tool-versions
index 14db82e..4519862 100644
--- a/config/asdf/tool-versions
+++ b/base/tool-versions
@@ -1,29 +1,28 @@
-1password-cli 2.29.0
+1password-cli 2.30.0
 age 1.2.0
 asdf-plugin-manager 1.3.1
-bottom 0.9.7
+bottom 0.10.2
+direnv 2.34.0
 dotenv-linter 3.3.0
 editorconfig-checker 2.8.0
-eza 0.18.23
+eza 0.19.0
 fd 10.1.0
-github-cli 2.53.0
-golang 1.22.5
+github-cli 2.54.0
+golang 1.22.6
 hadolint 2.12.0
 kubectl 1.30.3
 lazygit 0.43.1
-neovim system
-nodejs 22.5.1
+nodejs 22.6.0
 pipx 1.6.0
 pre-commit 3.8.0
 ripgrep 14.1.0
-rust 1.79.0
+rust 1.80.1
 semgrep system
 shellcheck 0.10.0
 shfmt 3.8.0
-terraform-ls 0.33.3
 terraform-lsp 0.0.12
-terragrunt 0.64.2
+terragrunt 0.66.3
 tf-summarize 0.3.10
-vault 1.17.2+ent
+vault 1.17.3
 yamllint 1.35.1
-yq 4.44.2
+yq 4.44.3
diff --git a/base/zshrc b/base/zshrc
index 2b5379e..1e9fdf0 100755
--- a/base/zshrc
+++ b/base/zshrc
@@ -108,6 +108,11 @@ initialize_antidot()
   fi
 }
 
+initialize_direnv()
+{
+  source "${XDG_CONFIG_HOME:-$HOME/.config}/asdf-direnv/zshrc"
+}
+
 main()
 {
   load_antigen
@@ -115,6 +120,7 @@ main()
   initialize_pyenv
   setup_tmux_window_name_plugin
   initialize_antidot
+  initialize_direnv
 }
 
 main "$@"
diff --git a/config/exports b/config/exports
index 4348015..aeed56a 100755
--- a/config/exports
+++ b/config/exports
@@ -308,8 +308,6 @@ msg "Setting up asdf configuration"
 export ASDF_DIR="${XDG_BIN_HOME}/asdf"
 export ASDF_CONFIG_FILE="${XDG_CONFIG_HOME}/asdf/asdfrc"
 export ASDF_DATA_DIR="${ASDF_DIR}"
-# This seems wrong, but `asdf info` and `versions.bash` differ on path resolution.
-export ASDF_DEFAULT_TOOL_VERSIONS_FILENAME=".config/asdf/tool-versions"
 export ASDF_PLUGIN_MANAGER_PLUGIN_VERSIONS_FILENAME="${XDG_CONFIG_HOME}/asdf/plugin-versions"
 export ASDF_LOG_FILE="${XDG_CACHE_HOME}/asdf/asdf.log"
 export ASDF_NODEJS_LEGACY_FILE_DYNAMIC_STRATEGY="latest_available"
@@ -317,6 +315,7 @@ export ASDF_NPM_DEFAULT_PACKAGES_FILE="${XDG_CONFIG_HOME}/asdf/npm-packages"
 export ASDF_GOLANG_MOD_VERSION_ENABLED=true
 export ASDF_GOLANG_DEFAULT_PACKAGES_FILE="${XDG_CONFIG_HOME}/asdf/golang-packages"
 export ASDF_CRATE_DEFAULT_PACKAGES_FILE="${XDG_CONFIG_HOME}/asdf/cargo-packages"
+export ASDF_DIRENV_IGNORE_MISSING_PLUGINS=1
 export PATH="${ASDF_DIR}/bin:${PATH}"
 
 # bob manages nvim versions
@@ -343,6 +342,11 @@ export COMPOSER_HOME="$XDG_STATE_HOME/composer"
 export COMPOSER_BIN="$COMPOSER_HOME/vendor/bin"
 export PATH="$COMPOSER_BIN:$PATH"
 
+# direnv, https://direnv.net/
+# https://direnv.net/docs/hook.html
+# Set the hook to show the direnv message in a different color
+export DIRENV_LOG_FORMAT=$'\033[2mdirenv: %s\033[0m'
+
 # docker, https://docs.docker.com/engine/reference/commandline/cli/
 msg "Setting up Docker configuration"
 export DOCKER_CONFIG="$XDG_CONFIG_HOME/docker"
diff --git a/scripts/install-asdf.sh b/scripts/install-asdf.sh
index 19ba55e..0acf1cd 100755
--- a/scripts/install-asdf.sh
+++ b/scripts/install-asdf.sh
@@ -27,6 +27,7 @@ ASDF_INSTALLABLES=(
   "1password-cli:github.com/NeoHsu/asdf-1password-cli.git"
   "age:github.com/threkk/asdf-age.git"
   "bottom:github.com/carbonteq/asdf-btm.git"
+  "direnv:github.com/asdf-community/asdf-direnv.git"
   "dotenv-linter:github.com/wesleimp/asdf-dotenv-linter.git"
   "editorconfig-checker:github.com/gabitchov/asdf-editorconfig-checker.git"
   "eza:github.com/lwiechec/asdf-eza.git"
@@ -40,6 +41,7 @@ ASDF_INSTALLABLES=(
   "pipx:github.com/yozachar/asdf-pipx.git"
   "pre-commit:github.com/jonathanmorley/asdf-pre-commit.git"
   "ripgrep:gitlab.com/wt0f/asdf-ripgrep.git"
+  "rust:github.com/code-lever/asdf-rust.git"
   "semgrep:github.com/brentjanderson/asdf-semgrep.git"
   "shellcheck:github.com/luizm/asdf-shellcheck.git"
   "shfmt:github.com/luizm/asdf-shfmt.git"