diff --git a/ci/docker/Dockerfile.build.ubuntu_cpu b/ci/docker/Dockerfile.build.ubuntu_cpu
index 45495a63f144..0e6ecd167ff3 100644
--- a/ci/docker/Dockerfile.build.ubuntu_cpu
+++ b/ci/docker/Dockerfile.build.ubuntu_cpu
@@ -67,7 +67,6 @@ COPY install/ubuntu_onnx.sh /work/
 RUN /work/ubuntu_onnx.sh
 
 COPY install/ubuntu_docs.sh /work/
-COPY install/docs_environment.yml /work/deps
 RUN /work/ubuntu_docs.sh
 
 # Always last