diff --git a/Dockerfile b/Dockerfile
index ee470a8..632cba2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,4 @@
-FROM emscripten/emsdk:3.1.47
+FROM emscripten/emsdk:3.1.49
 RUN apt-get update && apt-get install -qqy autoconf autopoint pkg-config libtool libtool-bin
-# Include fix from https://github.com/emscripten-core/emscripten/pull/20452.
-# Remove when 3.1.48 is released.
-RUN emsdk install releases-e7f0e42ac993b2a9e0416cd35e6f4bc57519a0db-64bit
 WORKDIR /src
-CMD ["sh", "-c", "emmake make -j`nproc`"]
+CMD ["sh", "-c", "emmake make -j$(nproc)"]