diff --git a/Dockerfile b/Dockerfile
index b1b88ca..e3b6d25 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,13 +1,13 @@
 # syntax=docker/dockerfile-upstream:master-labs
 
 # Base emsdk image with environment variables.
-FROM emscripten/emsdk:3.1.29 AS emsdk-base
+FROM emscripten/emsdk:3.1.40 AS emsdk-base
 ARG EXTRA_CFLAGS
 ARG EXTRA_LDFLAGS
 ARG FFMPEG_ST
 ARG FFMPEG_MT
 ENV INSTALL_DIR=/opt
-ENV FFMPEG_VERSION=n5.1.2
+ENV FFMPEG_VERSION=n6.0
 ENV CFLAGS="-I$INSTALL_DIR/include $CFLAGS $EXTRA_CFLAGS"
 ENV CXXFLAGS="$CFLAGS"
 ENV LDFLAGS="-L$INSTALL_DIR/lib $LDFLAGS $CFLAGS $EXTRA_LDFLAGS"