diff --git a/Dockerfile b/Dockerfile
index 18ac412f8..7b9612d12 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,7 +17,7 @@ RUN DEBIAN_FRONTEND=noninteractive \
   libwebp-dev libtiff-dev libexif-dev libxml2-dev libpoppler-glib-dev \
   swig libpango1.0-dev libmatio-dev libopenslide-dev libcfitsio-dev libopenjp2-7-dev liblcms2-dev \
   libgsf-1-dev libfftw3-dev liborc-0.4-dev librsvg2-dev libimagequant-dev libaom-dev \
-  libheif-dev libspng-dev libcgif-dev && \
+  libheif-dev libcgif-dev && \
   cd /tmp && \
     curl -fsSLO https://github.com/libvips/libvips/releases/download/v${VIPS_VERSION}/vips-${VIPS_VERSION}.tar.xz && \
     tar xf vips-${VIPS_VERSION}.tar.xz && \