diff --git a/docker/python-sci/Dockerfile b/docker/python-sci/Dockerfile
index 50821364..e7ba9863 100644
--- a/docker/python-sci/Dockerfile
+++ b/docker/python-sci/Dockerfile
@@ -19,7 +19,7 @@ RUN conda config --set solver classic && \
     conda install -y python=3.12.1 && \
     conda install -y \
     pika==1.3.1 \
-    python-dateutil==2.8.2 \
+    python-dateutil==2.9.0 \
     pint==0.23 \
     numpy==1.26.4 \
     netcdf4==1.6.5 \
diff --git a/docker/python-sci/arm64/Dockerfile b/docker/python-sci/arm64/Dockerfile
index 1c8894c5..2ed64299 100644
--- a/docker/python-sci/arm64/Dockerfile
+++ b/docker/python-sci/arm64/Dockerfile
@@ -16,7 +16,7 @@ RUN conda config --add channels conda-forge && \
     conda install -y python=3.11 && \
     conda install -y \
     pika==1.3.1 \
-    python-dateutil==2.8.2 \
+    python-dateutil==2.9.0 \
     pint==0.21 \
     numpy==1.24.3 \
     netcdf4==1.6.3 \
diff --git a/docker/python/Dockerfile b/docker/python/Dockerfile
index 8db27557..cc61411d 100644
--- a/docker/python/Dockerfile
+++ b/docker/python/Dockerfile
@@ -21,7 +21,7 @@ RUN pip3 install --no-cache \
     pika==1.3.1 \
     requests==2.28.2 \
     flask==2.3.2 \
-    python-dateutil==2.8.2 \
+    python-dateutil==2.9.0 \
     jsonschema==4.19.0 \
     pycouchdb==1.14.2 \
     gunicorn==21.2.0 \