diff --git a/metadata/org.fdroid.fdroid.yml b/metadata/org.fdroid.fdroid.yml
index 719503e07b..435d909177 100644
--- a/metadata/org.fdroid.fdroid.yml
+++ b/metadata/org.fdroid.fdroid.yml
@@ -1736,7 +1736,11 @@ Builds:
     subdir: app
     gradle:
       - full
-    prebuild: echo "org.gradle.jvmargs=-Xms1g -Xmx4g -XX:MaxPermSize=4g" >> ../gradle.properties
+    prebuild:
+      - max=$(expr $(sed -En 's,^MemAvailable:\s*([0-9]+)[^0-9]*$,\1,p' /proc/meminfo)
+        / 1024 / 1024)
+      - printf "\norg.gradle.jvmargs=-Xms1g -Xmx${max}g -XX:MaxPermSize=${max}g\n"
+        >> ../gradle.properties
     scanignore:
       - app/src/androidTest/assets
       - app/src/test/resources
@@ -1747,7 +1751,11 @@ Builds:
     subdir: app
     gradle:
       - full
-    prebuild: echo "org.gradle.jvmargs=-Xms1g -Xmx4g -XX:MaxPermSize=4g" >> ../gradle.properties
+    prebuild:
+      - max=$(expr $(sed -En 's,^MemAvailable:\s*([0-9]+)[^0-9]*$,\1,p' /proc/meminfo)
+        / 1024 / 1024)
+      - printf "\norg.gradle.jvmargs=-Xms1g -Xmx${max}g -XX:MaxPermSize=${max}g\n"
+        >> ../gradle.properties
     scanignore:
       - app/src/androidTest/assets
       - app/src/test/resources