diff --git a/build.sh b/build.sh
index daf39cd..c574094 100644
--- a/build.sh
+++ b/build.sh
@@ -3,6 +3,10 @@
 main() {
    set -eo pipefail
 
+   if ! which pip3; then
+      apt install -y pip3
+   fi
+
    cd_work_d
 
    ytdlp2STRM_d=./ytdlp2STRM