diff --git a/Dockerfile b/Dockerfile
index 15118db..6e9d1d0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -72,7 +72,7 @@ RUN git clone --recursive https://github.com/ekg/seqwish \
 RUN git clone --recursive https://github.com/pangenome/smoothxg \
     && cd smoothxg \
     && git pull \
-    && git checkout 620d1d48388ae39bc1f1680fa8b03323bad71e55 \
+    && git checkout 9970e0df187c5e1234ace61243f30ddccbbbbdd8 \
     && git submodule update --init --recursive \
     && sed -i 's/-msse4.1/-march=sandybridge -Ofast/g' deps/spoa/CMakeLists.txt \
     && sed -i 's/-march=native/-march=sandybridge -Ofast/g' deps/spoa/CMakeLists.txt \