diff --git a/images/bench/Dockerfile b/images/bench/Dockerfile
index 1b8a92de..181a6623 100644
--- a/images/bench/Dockerfile
+++ b/images/bench/Dockerfile
@@ -71,6 +71,8 @@ RUN apt-get update \
     tk-dev \
     liblzma-dev \
     file \
+    # For MIME type detection
+    media-types \
     && rm -rf /var/lib/apt/lists/*
 
 RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen \
diff --git a/images/custom/Containerfile b/images/custom/Containerfile
index 208f13e3..06182d42 100644
--- a/images/custom/Containerfile
+++ b/images/custom/Containerfile
@@ -37,6 +37,8 @@ RUN useradd -ms /bin/bash frappe \
     # For healthcheck
     wait-for-it \
     jq \
+    # For MIME type detection
+    media-types \
     # NodeJS
     && mkdir -p ${NVM_DIR} \
     && curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.5/install.sh | bash \
diff --git a/images/production/Containerfile b/images/production/Containerfile
index 050fec4b..563bc763 100644
--- a/images/production/Containerfile
+++ b/images/production/Containerfile
@@ -34,6 +34,8 @@ RUN useradd -ms /bin/bash frappe \
     # For healthcheck
     wait-for-it \
     jq \
+    # For MIME type detection
+    media-types \
     # NodeJS
     && mkdir -p ${NVM_DIR} \
     && curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.5/install.sh | bash \