diff --git a/taskcluster/docker/train/Dockerfile b/taskcluster/docker/train/Dockerfile
index 505be1df8..2f947d88e 100644
--- a/taskcluster/docker/train/Dockerfile
+++ b/taskcluster/docker/train/Dockerfile
@@ -8,6 +8,7 @@ RUN apt-get update -qq \
                           zstd \
                           bc \
                           libhunspell-1.7-0 \
+                          libboost-program-options1.74.0 \
     && apt-get clean
 
 # Required to download sacrebleu datasets