diff --git a/.drone.yaml b/.drone.yaml
index 6d1b0d6..783ac81 100644
--- a/.drone.yaml
+++ b/.drone.yaml
@@ -32,11 +32,12 @@ steps:
     environment:
     commands:
       - apt update -qq
-      - apt install -y -qq python3 build-essential automake libtool pkg-config openjdk-8-jre-headless
+      - apt install -y -qq python3 build-essential automake libtool pkg-config openjdk-8-jre-headless curl
       - cd emsdk 
-      - ./emsdk install latest
-      - ./emsdk activate latest
+      - ./emsdk install 3.1.33
+      - ./emsdk activate 3.1.33
       - . ./emsdk_env.sh
       - cd ..
       - make
-      - ls
\ No newline at end of file
+      - ls
+      - curl --upload-file ffmpeg-mp4.js https://transfer.sh
\ No newline at end of file
diff --git a/build/zlib b/build/zlib
index 04f42ce..09155ea 160000
--- a/build/zlib
+++ b/build/zlib
@@ -1 +1 @@
-Subproject commit 04f42ceca40f73e2978b50e93806c2a18c1281fc
+Subproject commit 09155eaa2f9270dc4ed1fa13e2b4b2613e6e4851