diff --git a/deployment/docker/Dockerfile.arm32v7 b/deployment/docker/Dockerfile.arm32v7
index 072b9cdebd..816b662aae 100644
--- a/deployment/docker/Dockerfile.arm32v7
+++ b/deployment/docker/Dockerfile.arm32v7
@@ -3,6 +3,7 @@ ARG DOTNET_VERSION=3.0
 FROM microsoft/dotnet:${DOTNET_VERSION}-sdk as builder
 WORKDIR /repo
 COPY . .
+#TODO Remove or update the sed line when we update dotnet version.
 RUN export DOTNET_CLI_TELEMETRY_OPTOUT=1 \
  && find . -type f -exec sed -i 's/netcoreapp2.1/netcoreapp3.0/g' {} \; \
  && dotnet clean \
diff --git a/deployment/docker/Dockerfile.arm64v8 b/deployment/docker/Dockerfile.arm64v8
index fecb8cbfbb..932b503913 100644
--- a/deployment/docker/Dockerfile.arm64v8
+++ b/deployment/docker/Dockerfile.arm64v8
@@ -3,6 +3,7 @@ ARG DOTNET_VERSION=3.0
 FROM microsoft/dotnet:${DOTNET_VERSION}-sdk as builder
 WORKDIR /repo
 COPY . .
+#TODO Remove or update the sed line when we update dotnet version.
 RUN export DOTNET_CLI_TELEMETRY_OPTOUT=1 \
  && find . -type f -exec sed -i 's/netcoreapp2.1/netcoreapp3.0/g' {} \; \
  && dotnet clean \