diff --git a/web-build/Dockerfile.ddev-gum b/web-build/Dockerfile.ddev-gum
index b890a31..8b89398 100644
--- a/web-build/Dockerfile.ddev-gum
+++ b/web-build/Dockerfile.ddev-gum
@@ -5,3 +5,4 @@ RUN curl -fsSL https://repo.charm.sh/apt/gpg.key | gpg --dearmor -o /etc/apt/key
 RUN echo "deb [signed-by=/etc/apt/keyrings/charm.gpg] https://repo.charm.sh/apt/ * *" | tee /etc/apt/sources.list.d/charm.list
 # https://ddev.readthedocs.io/en/stable/users/extend/customizing-images/#build-time-environment-variables
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y -o Dpkg::Options::="--force-confnew" --no-install-recommends --no-install-suggests gum
+ENV COLORTERM=truecolor
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