diff --git a/ci/Dockerfile b/ci/Dockerfile
index ec7607f0d62b..4b0663bc7f52 100644
--- a/ci/Dockerfile
+++ b/ci/Dockerfile
@@ -7,7 +7,7 @@ RUN sed -i 's|http://archive.ubuntu.com/ubuntu|http://us-east-2.ec2.archive.ubun
 RUN apt-get update -yy && \
     DEBIAN_FRONTEND=noninteractive apt-get -y install make build-essential cmake protobuf-compiler curl parallel python3 python3-pip \
     openssl libssl-dev libsasl2-dev libcurl4-openssl-dev pkg-config bash openjdk-11-jdk wget unzip git tmux lld postgresql-client kafkacat netcat mysql-client \
-    maven zstd libzstd-dev -yy \
+    maven zstd libzstd-dev locales -yy \
     && rm -rf /var/lib/{apt,dpkg,cache,log}/
 
 SHELL ["/bin/bash", "-c"]
@@ -43,7 +43,7 @@ RUN curl -L --proto '=https' --tlsv1.2 -sSf https://raw.githubusercontent.com/ca
 RUN cargo binstall -y --no-symlinks cargo-llvm-cov cargo-nextest cargo-hakari cargo-sort cargo-cache cargo-audit \
     cargo-make@0.36.10 \
     sqllogictest-bin@0.15.3 \
-    && cargo install sccache --locked \
+    && cargo install sccache \
     && cargo cache -a \
     && rm -rf "/root/.cargo/registry/index" \
     && rm -rf "/root/.cargo/registry/cache" \
diff --git a/ci/build-ci-image.sh b/ci/build-ci-image.sh
index 299b5d91878f..078fd419bd54 100755
--- a/ci/build-ci-image.sh
+++ b/ci/build-ci-image.sh
@@ -13,7 +13,7 @@ cat ../rust-toolchain
 # !!! CHANGE THIS WHEN YOU WANT TO BUMP CI IMAGE !!! #
 #          AND ALSO docker-compose.yml               #
 ######################################################
-export BUILD_ENV_VERSION=v20230909
+export BUILD_ENV_VERSION=v20230914
 
 export BUILD_TAG="public.ecr.aws/x5u3w5h6/rw-build-env:${BUILD_ENV_VERSION}"
 
diff --git a/ci/docker-compose.yml b/ci/docker-compose.yml
index d0cdbe4af816..4f5da42df540 100644
--- a/ci/docker-compose.yml
+++ b/ci/docker-compose.yml
@@ -71,7 +71,7 @@ services:
       retries: 5
 
   source-test-env:
-    image: public.ecr.aws/x5u3w5h6/rw-build-env:v20230909
+    image: public.ecr.aws/x5u3w5h6/rw-build-env:v20230914
     depends_on:
       - mysql
       - db
@@ -81,7 +81,7 @@ services:
       - ..:/risingwave
 
   sink-test-env:
-    image: public.ecr.aws/x5u3w5h6/rw-build-env:v20230909
+    image: public.ecr.aws/x5u3w5h6/rw-build-env:v20230914
     depends_on:
       - mysql
       - db
@@ -91,12 +91,12 @@ services:
       - ..:/risingwave
 
   rw-build-env:
-    image: public.ecr.aws/x5u3w5h6/rw-build-env:v20230909
+    image: public.ecr.aws/x5u3w5h6/rw-build-env:v20230914
     volumes:
       - ..:/risingwave
 
   ci-flamegraph-env:
-    image: public.ecr.aws/x5u3w5h6/rw-build-env:v20230909
+    image: public.ecr.aws/x5u3w5h6/rw-build-env:v20230914
     # NOTE(kwannoel): This is used in order to permit
     # syscalls for `nperf` (perf_event_open),
     # so it can do CPU profiling.
@@ -107,7 +107,7 @@ services:
       - ..:/risingwave
 
   regress-test-env:
-    image: public.ecr.aws/x5u3w5h6/rw-build-env:v20230909
+    image: public.ecr.aws/x5u3w5h6/rw-build-env:v20230914
     depends_on:
       db:
         condition: service_healthy
diff --git a/ci/scripts/regress-test.sh b/ci/scripts/regress-test.sh
index aa1ba7836dc5..aa5912e591df 100755
--- a/ci/scripts/regress-test.sh
+++ b/ci/scripts/regress-test.sh
@@ -30,8 +30,6 @@ mv target/debug/risingwave_regress_test-"$profile" target/debug/risingwave_regre
 chmod +x ./target/debug/risingwave_regress_test
 
 echo "--- Postgres regress test"
-apt-get -y update
-apt-get -y install locales
 locale-gen C
 export LANGUAGE=C
 export LANG=C