diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 2aeb8265b..dd039a524 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -80,7 +80,7 @@ RUN cp -r .pgenv/src .pgenv/pgsql-* .pgenv/config .pgenv-staging/
 RUN rm .pgenv-staging/config/default.conf
 
 FROM base AS pg16
-RUN pgenv build 16beta3
+RUN pgenv build 16rc1
 RUN rm .pgenv/src/*.tar*
 RUN make -C .pgenv/src/postgresql-*/ clean
 RUN make -C .pgenv/src/postgresql-*/src/include install
@@ -178,7 +178,7 @@ COPY --chown=citus:citus .psqlrc .
 RUN sudo chown --from=root:root citus:citus -R ~
 
 # sets default pg version
-RUN pgenv switch 16beta3
+RUN pgenv switch 16rc1
 
 USER root
 RUN curl -o /root/gdbpg.py https://raw.githubusercontent.com/tvesely/gdbpg/master/gdbpg.py