diff --git a/metadata/ch.protonvpn.android.yml b/metadata/ch.protonvpn.android.yml
index 46c929c24f..6940ece08b 100644
--- a/metadata/ch.protonvpn.android.yml
+++ b/metadata/ch.protonvpn.android.yml
@@ -405,9 +405,7 @@ Builds:
       - openvpn/src/main/cpp/openvpn3/test/unittests
       - strongswan/testing/hosts/alice/etc/raddb/certs/random
     prebuild:
-      - sed -i -e '/triple/d' -e '/play\ {/,+4d' -e 's/20.0.5594570/20.1.5948944/'
-        build.gradle
-      - sed -i -e 's/20.0.5594570/20.1.5948944/' ../openvpn/build.gradle.kts
+      - sed -i -e '/triple/d' -e '/play\ {/,+4d' build.gradle
       - sed -i -e '/kotlinx/d' ../build.gradle
       - pushd ../strongswan
       - git clone git://git.strongswan.org/android-ndk-boringssl.git -b ndk-static
@@ -433,7 +431,7 @@ Builds:
       - rm -fr openvpn/build/tmp
       - rm -fr openvpn/.cxx
       - popd
-    ndk: r20b
+    ndk: r21d
     gradleprops:
       - buildUniversalApk