diff --git a/cryptol-remote-api/test.Dockerfile b/cryptol-remote-api/test.Dockerfile
index 1ec2cdff5..1ecf83dfc 100644
--- a/cryptol-remote-api/test.Dockerfile
+++ b/cryptol-remote-api/test.Dockerfile
@@ -1,8 +1,8 @@
-FROM python:3.7
+FROM python:3.11
 # Intended to be built from the root of the cryptol git repository
 
 COPY cryptol-remote-api/python python
-RUN pip3 install 'poetry==1.1.5'
+RUN pip3 install 'poetry==1.4.2'
 RUN cd python && poetry install
 COPY cryptol-remote-api/test-cryptol-remote-api.py /python/entrypoint.py
 WORKDIR /python