diff --git a/mountainsort5/Dockerfile b/mountainsort5/Dockerfile
index 9387fe5..000e504 100644
--- a/mountainsort5/Dockerfile
+++ b/mountainsort5/Dockerfile
@@ -5,4 +5,4 @@ RUN pip install --upgrade pip
 
 RUN pip install numpy
 
-RUN pip install mountainsort5==0.5.3
+RUN pip install mountainsort5==0.5.6
diff --git a/mountainsort5/build.sh b/mountainsort5/build.sh
index 9c7f889..7f5973e 100755
--- a/mountainsort5/build.sh
+++ b/mountainsort5/build.sh
@@ -1,3 +1,3 @@
 #!/bin/bash
 
-docker build -t spikeinterface/mountainsort5-base:latest -t spikeinterface/mountainsort5-base:0.5.3 .
+docker build -t spikeinterface/mountainsort5-base:latest -t spikeinterface/mountainsort5-base:0.5.6 .