diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index bafb696a..7ad83c00 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -32,7 +32,7 @@ jobs:
         run: |
           docker run -d -p 5433:5433 -p 5444:5444 \
             --name vertica_docker --network my-network \
-            vertica/vertica-ce:23.3.0-0
+            vertica/vertica-ce:23.4.0-0
           echo "Vertica startup ..."
           until docker exec vertica_docker test -f /data/vertica/VMart/agent_start.out; do \
             echo "..."; \
diff --git a/README.md b/README.md
index cbabd63b..43ac0452 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@
 
 Please check out [release notes](https://github.com/vertica/vertica-python/releases) to learn about the latest improvements.
 
-vertica-python has been tested with Vertica 23.3.0 and Python 3.7/3.8/3.9/3.10/3.11. Feel free to submit issues and/or pull requests (Read up on our [contributing guidelines](#contributing-guidelines)).
+vertica-python has been tested with Vertica 23.4.0 and Python 3.7/3.8/3.9/3.10/3.11. Feel free to submit issues and/or pull requests (Read up on our [contributing guidelines](#contributing-guidelines)).
 
 
 ## Installation