diff --git a/ci/docker/asmjs-unknown-emscripten/Dockerfile b/ci/docker/asmjs-unknown-emscripten/Dockerfile
index 6c08340eb98b30d48903b1972475fc36c4430b13..64f73aa6a00b9282faffcca8c1261ef865e0f93e 100644
--- a/ci/docker/asmjs-unknown-emscripten/Dockerfile
+++ b/ci/docker/asmjs-unknown-emscripten/Dockerfile
@@ -7,6 +7,7 @@ RUN apt-get update && \
     gcc \
     git \
     libc6-dev \
+    libxml2 \
     python \
     xz-utils