diff --git a/.mise.toml b/.mise.toml
index 7c1a0bad9..068718b61 100644
--- a/.mise.toml
+++ b/.mise.toml
@@ -1,10 +1,10 @@
-[env]
-ANDROID_HOME = "{{env.HOME}}/.local/share/mise/installs/android-sdk/21.0"
-_.path = [
-  "{{env.HOME}}/.local/share/mise/installs/android-sdk/21.0/cmdline-tools/21.0/bin",
-  "{{env.HOME}}/.local/share/mise/installs/android-sdk/21.0/platform-tools",
-  "{{env.HOME}}/.local/share/mise/installs/android-sdk/21.0/emulator",
-]
+[vars]
+android_sdk_version = '{{ read_file(path=".tool-versions") | split(pat="android-sdk") | last | trim | split(pat="\n") | first | trim }}'
 
-[tools]
-java = "21"
+[env]
+ANDROID_HOME = "{{ env.HOME }}/.local/share/mise/installs/android-sdk/{{ vars.android_sdk_version }}"
+_.path = [
+  "{{ env.HOME }}/.local/share/mise/installs/android-sdk/{{ vars.android_sdk_version }}/cmdline-tools/{{ vars.android_sdk_version }}/bin",
+  "{{ env.HOME }}/.local/share/mise/installs/android-sdk/{{ vars.android_sdk_version }}/platform-tools",
+  "{{ env.HOME }}/.local/share/mise/installs/android-sdk/{{ vars.android_sdk_version }}/emulator",
+]
diff --git a/docs/android.md b/docs/android.md
index c8f130996..81a35c684 100644
--- a/docs/android.md
+++ b/docs/android.md
@@ -27,13 +27,13 @@ The formula reserves three digits each for minor and patch. If either reaches `1
 
 ## Prerequisites (local dev)
 
-Local Android builds run on macOS (or Linux) and need the Android toolchain, pinned in `.tool-versions` (`java 21`, `android-sdk 21.0`) and wired up by `.mise.toml` (which sets `ANDROID_HOME` and puts `cmdline-tools/21.0/bin`, `platform-tools`, and `emulator` on `PATH`). With [mise](https://mise.jdx.dev):
+Local Android builds run on macOS (or Linux) and need the Android toolchain, pinned in `.tool-versions` (`java 21`, `android-sdk 21.0`) and wired up by `.mise.toml` (which derives `ANDROID_HOME` and the command-line tool paths from the `android-sdk` entry). With [mise](https://mise.jdx.dev):
 
 ```bash
 mise install        # java 21 + android-sdk 21.0 command-line tools
 ```
 
-> **Pin a real `android-sdk` version, not `latest`.** The mise `android-sdk` plugin's `latest` resolved to the ancient `1.0` bundle, whose `sdkmanager` (3.6.0) predates the `emulator` package and fails with `Failed to find package emulator`. `21.0` ships a current `sdkmanager`. If you bump it, update the version in `.tool-versions` and in all four paths in `.mise.toml`.
+> **Pin a real `android-sdk` version, not `latest`.** The mise `android-sdk` plugin's `latest` resolved to the ancient `1.0` bundle, whose `sdkmanager` (3.6.0) predates the `emulator` package and fails with `Failed to find package emulator`. `21.0` ships a current `sdkmanager`. If you bump it, update only the version in `.tool-versions`; `.mise.toml` derives its paths from that tool entry.
 
 `mise install` only lays down the command-line tools. Install the rest and create an emulator. On Apple Silicon: