diff --git a/Dockerfile b/Dockerfile
index f101293e..72e4197c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -54,7 +54,8 @@ RUN apk add --virtual .build-deps \
       libffi-dev \
       build-base \
  && sed -Ei 's/psycopg2-binary.+//' optional-requirements.txt \
- && pip3 install -r requirements.txt -r optional-requirements.txt \
+ # TODO: unpin Pillow here after it's updated in Alpine
+ && pip3 install -r requirements.txt -r optional-requirements.txt 'pillow==8.2' \
  && apk del .build-deps
 
 COPY . /opt/mautrix-telegram