diff --git a/.forgejo/workflows/build-apk.yml b/.forgejo/workflows/build-apk.yml
index 53e31e1..5879490 100644
--- a/.forgejo/workflows/build-apk.yml
+++ b/.forgejo/workflows/build-apk.yml
@@ -14,6 +14,10 @@ jobs:
     env:
       ANDROID_HOME: /opt/android-sdk
       ANDROID_SDK_ROOT: /opt/android-sdk
+      # Force IPv4 for all JVMs (Gradle launcher, daemon, Kotlin/CMake workers).
+      # The runner host has no working IPv6 route, so Maven Central (which has
+      # AAAA records) was unreachable — this makes Java ignore AAAA and use IPv4.
+      JAVA_TOOL_OPTIONS: -Djava.net.preferIPv4Stack=true
       GRADLE_OPTS: -Dorg.gradle.jvmargs=-Xmx4g -Dorg.gradle.daemon=false
     steps:
       - name: Checkout