diff --git a/intel-sgx/ppid-retrieval-tool/Dockerfile b/intel-sgx/ppid-retrieval-tool/Dockerfile
index 0f89832a..c0e3489e 100644
--- a/intel-sgx/ppid-retrieval-tool/Dockerfile
+++ b/intel-sgx/ppid-retrieval-tool/Dockerfile
@@ -28,6 +28,7 @@ USER root
 RUN echo 'deb [signed-by=/etc/apt/keyrings/intel-sgx-keyring.asc arch=amd64] https://download.01.org/intel-sgx/sgx_repo/ubuntu noble main' | sudo tee /etc/apt/sources.list.d/intel-sgx.list
 RUN wget https://download.01.org/intel-sgx/sgx_repo/ubuntu/intel-sgx-deb.key
 RUN cat intel-sgx-deb.key | sudo tee /etc/apt/keyrings/intel-sgx-keyring.asc > /dev/null
+RUN apt-get update
 RUN apt-get install -y libsgx-urts
 
 # Preparing to build PCKIDRetrievalTool