diff --git a/docker/0.23-1/base/Dockerfile.cpu b/docker/0.23-1/base/Dockerfile.cpu
index ed64232..5186140 100644
--- a/docker/0.23-1/base/Dockerfile.cpu
+++ b/docker/0.23-1/base/Dockerfile.cpu
@@ -5,9 +5,9 @@ FROM ubuntu:${UBUNTU_VERSION}@sha256:${UBUNTU_IMAGE_DIGEST}
 
 ARG MINICONDA_VERSION=4.12.0
 ARG CONDA_CHECKSUM=4dc4214839c60b2f5eb3efbdee1ef5d9b45e74f2c09fcae6c8934a13f36ffc3e
-ARG CONDA_PY_VERSION=37
+ARG CONDA_PY_VERSION=38
 ARG CONDA_PKG_VERSION=4.13.0
-ARG PYTHON_VERSION=3.7.10
+ARG PYTHON_VERSION=3.8.18
 ARG PYARROW_VERSION=1.0.0
 ARG MLIO_VERSION=0.6.0
 
diff --git a/requirements.txt b/requirements.txt
index d069023..31edf7d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,3 +22,4 @@ scikit-learn==0.23.2
 scipy==1.5.3
 six==1.15.0
 Werkzeug==0.15.6
+gevent==23.9.1