diff --git a/scripts/docker/Dockerfile.dj b/scripts/docker/Dockerfile.dj
index 2f333176..81fdf539 100644
--- a/scripts/docker/Dockerfile.dj
+++ b/scripts/docker/Dockerfile.dj
@@ -21,7 +21,7 @@ RUN     apk add -U !pyc \
         && apk add -t .bd \
             bash wget gcc g++ make cmake patchelf \
             python3-dev ffmpeg-dev fftw-dev libsndfile-dev \
-            py3-wheel py3-numpy-dev \
+            py3-wheel py3-numpy-dev libffi-dev \
             vamp-sdk-dev \
         && rm -f /usr/lib/python3*/EXTERNALLY-MANAGED \
         && python3 -m pip install pyvips \
diff --git a/scripts/docker/Dockerfile.iv b/scripts/docker/Dockerfile.iv
index 8889e716..d6235004 100644
--- a/scripts/docker/Dockerfile.iv
+++ b/scripts/docker/Dockerfile.iv
@@ -15,7 +15,7 @@ RUN     apk add -U !pyc \
             vips-jxl vips-heif vips-poppler vips-magick \
         && apk add -t .bd \
             bash wget gcc g++ make cmake patchelf \
-            python3-dev py3-wheel \
+            python3-dev py3-wheel libffi-dev \
         && rm -f /usr/lib/python3*/EXTERNALLY-MANAGED \
         && python3 -m pip install pyvips \
         && apk del py3-pip .bd