diff --git a/herdingspikes/Dockerfile b/herdingspikes/Dockerfile
index e9c40be..875a9b5 100644
--- a/herdingspikes/Dockerfile
+++ b/herdingspikes/Dockerfile
@@ -1,6 +1,6 @@
 FROM python:3.12
 
 RUN pip install "numpy<2.0"
-RUN pip install cython
+RUN pip install cython sympy
 
-RUN pip install herdingspikes==0.4.5
+RUN pip install herdingspikes==0.4.6
diff --git a/herdingspikes/build.sh b/herdingspikes/build.sh
index ae15c3a..c1ad044 100755
--- a/herdingspikes/build.sh
+++ b/herdingspikes/build.sh
@@ -1,3 +1,3 @@
 #!/bin/bash
 
-docker build -t spikeinterface/herdingspikes-base:latest -t spikeinterface/herdingspikes-base:0.4.5 .
+docker build -t spikeinterface/herdingspikes-base:latest -t spikeinterface/herdingspikes-base:0.4.6 .