diff --git a/build.sh b/build.sh
index c574094..2169069 100644
--- a/build.sh
+++ b/build.sh
@@ -4,7 +4,11 @@ main() {
    set -eo pipefail
 
    if ! which pip3; then
-      apt install -y pip3
+      if which apk; then
+         apk update && apk add py3-pip
+      else
+         apt install -y pip3
+      fi
    fi
 
    cd_work_d
@@ -15,7 +19,15 @@ main() {
    head_ts="$(cd "$ytdlp2STRM_d"; git log -n 1 --format=%as)"
    echo head_ts=$head_ts
 
-   yt_dlp_latest="$(pip3 index versions yt-dlp | grep LATEST | awk '{print $NF}')"
+   yt_dlp_latest="$(
+      pip3 index versions yt-dlp \
+      | grep '^Available.versions:' \
+      | tr ' ' '\n' \
+      | grep -v 'Available.versions:' \
+      | sort -n \
+      | tail -n 1 \
+      | tr -d ','
+   )"
    echo yt_dlp_latest=$yt_dlp_latest
 
    img=registry-app.inhome.blapointe.com:5001/bel/ytdlp2strm