diff --git a/.ci/jenkins/lib/build-matrix.yaml b/.ci/jenkins/lib/build-matrix.yaml
index e1943b47c5..380dcb3fbd 100644
--- a/.ci/jenkins/lib/build-matrix.yaml
+++ b/.ci/jenkins/lib/build-matrix.yaml
@@ -43,7 +43,7 @@ env:
   TEST_TIMEOUT: 30
   UCX_TLS: "^shm"
   STORAGE_DRIVER: 'overlay'
-  CI_IMAGE_TAG: "20260318-5"
+  CI_IMAGE_TAG: "20260323-1"
 
 
 runs_on_dockers:
diff --git a/.ci/jenkins/lib/test-matrix.yaml b/.ci/jenkins/lib/test-matrix.yaml
index d0a69de133..c425aa6064 100644
--- a/.ci/jenkins/lib/test-matrix.yaml
+++ b/.ci/jenkins/lib/test-matrix.yaml
@@ -49,7 +49,7 @@ env:
   SLURM_JOB_TIMEOUT: '02:20:00'
   SLURM_IMMEDIATE_TIMEOUT: "3600"
   STORAGE_DRIVER: overlay
-  CI_IMAGE_TAG: "20260318-5"
+  CI_IMAGE_TAG: "20260323-1"
 
 empty_volumes:
   - {mountPath: /var/lib/containers/storage, memory: false}
diff --git a/.gitlab/build.sh b/.gitlab/build.sh
index a5eae265c1..5d2fe0213f 100755
--- a/.gitlab/build.sh
+++ b/.gitlab/build.sh
@@ -282,7 +282,9 @@ else
 
     ( \
       cd ${TMPDIR} && \
-      git clone --depth 1 https://github.com/kvcache-ai/Mooncake.git && \
+      MOONCAKE_VERSION="${MOONCAKE_VERSION:-v0.3.9}" && \
+      echo "MOONCAKE_VERSION: ${MOONCAKE_VERSION}" && \
+      git clone --depth 1 --branch "${MOONCAKE_VERSION}" https://github.com/kvcache-ai/Mooncake.git && \
       cd Mooncake && \
       $SUDO bash dependencies.sh -y && \
       mkdir build && cd build && \
diff --git a/ATTRIBUTIONS-CPP.md b/ATTRIBUTIONS-CPP.md
index 291753b18d..edf0494dc3 100644
--- a/ATTRIBUTIONS-CPP.md
+++ b/ATTRIBUTIONS-CPP.md
@@ -5274,7 +5274,7 @@ Random Hacker.
 That's all there is to it!
 ```
 
-## Mooncake - v0.3.2.post1
+## Mooncake - v0.3.9
 
 - **Repository URL**: https://github.com/kvcache-ai/Mooncake
 - **License URL**: https://github.com/kvcache-ai/Mooncake/blob/main/LICENSE