diff --git a/metadata/com.cax.pmk.ext.yml b/metadata/com.cax.pmk.ext.yml
new file mode 100644
index 0000000000..ef099882f9
--- /dev/null
+++ b/metadata/com.cax.pmk.ext.yml
@@ -0,0 +1,30 @@
+Categories:
+  - Science & Education
+License: GPL-3.0-only
+AuthorName: Vadym Khokhlov
+AuthorEmail: vadim.khohlov@gmail.com
+AuthorWebSite: https://xvadim.blogspot.com/
+SourceCode: https://github.com/xvadim/pmk-android
+IssueTracker: https://github.com/xvadim/pmk-android/issues
+
+AutoName: MK 61/54
+
+RepoType: git
+Repo: https://github.com/xvadim/pmk-android
+
+Builds:
+  - versionName: 3.3.1
+    versionCode: 331
+    commit: 3.3.1
+    subdir: pmk/app
+    sudo:
+      - apt-get update || apt-get update
+      - apt-get install -y openjdk-11-jdk
+      - update-alternatives --auto java
+    gradle:
+      - full
+
+AutoUpdateMode: Version %v
+UpdateCheckMode: Tags
+CurrentVersion: 3.3.1
+CurrentVersionCode: 331