diff --git a/api/Dockerfile.alpine b/api/Dockerfile.alpine
index c4fdd7d8c..1d129d9b9 100644
--- a/api/Dockerfile.alpine
+++ b/api/Dockerfile.alpine
@@ -111,6 +111,7 @@ ENV PATH="/venv/bin:$PATH"
 COPY . /app
 WORKDIR /app
 
+RUN apk add --no-cache gfortran
 RUN --mount=type=cache,target=~/.cache/pip; \
   set -eux; \
   pip3 install --no-deps --editable .