diff --git a/alpine/Dockerfile b/alpine/Dockerfile
index e86f710f..ff383154 100644
--- a/alpine/Dockerfile
+++ b/alpine/Dockerfile
@@ -26,6 +26,7 @@ RUN apk --no-cache add \
     fribidi-dev \
     harfbuzz-dev \
     jpeg-dev \
+    libavif-dev \
     lcms2-dev \
     libimagequant-dev \
     openjpeg-dev \
diff --git a/amazon-2023-amd64/Dockerfile b/amazon-2023-amd64/Dockerfile
index 5f1785d4..d759111a 100644
--- a/amazon-2023-amd64/Dockerfile
+++ b/amazon-2023-amd64/Dockerfile
@@ -14,6 +14,7 @@ RUN yum install -y \
     libjpeg-devel \
     libtiff-devel \
     make \
+    nasm \
     openssl-devel \
     python3-devel \
     python3-pip \
@@ -54,6 +55,7 @@ RUN wget https://github.com/ninja-build/ninja/releases/download/v1.12.1/ninja-li
 RUN /usr/bin/python3 -m pip install meson
 RUN cd /depends \
     && ./install_imagequant.sh \
+    && ./install_libavif.sh \
     && ./install_openjpeg.sh \
     && ./install_raqm.sh \
     && ./install_webp.sh
diff --git a/arch/Dockerfile b/arch/Dockerfile
index a031e237..7b944615 100644
--- a/arch/Dockerfile
+++ b/arch/Dockerfile
@@ -15,6 +15,7 @@ RUN pacman -Sy --noconfirm \
             extra/fribidi \
             extra/harfbuzz \
             extra/lcms2 \
+            extra/libavif \
             extra/libjpeg-turbo \
             extra/libtiff \
             extra/libwebp \
diff --git a/centos-stream-10-amd64/Dockerfile b/centos-stream-10-amd64/Dockerfile
index 754441fc..26f48922 100644
--- a/centos-stream-10-amd64/Dockerfile
+++ b/centos-stream-10-amd64/Dockerfile
@@ -9,7 +9,7 @@ RUN yum install -y \
     cargo \
     cmake \
     freetype-devel \
-    gcc \
+    gcc-c++ \
     ghostscript \
     git \
     lcms2-devel \
@@ -18,6 +18,7 @@ RUN yum install -y \
     libwebp-devel \
     make \
     meson \
+    nasm \
     openjpeg2-devel \
     openssl-devel \
     python3-devel \
@@ -46,6 +47,7 @@ RUN bash -c "python3.12 -m pip install virtualenv \
 COPY depends /depends
 RUN cd /depends \
     && ./install_imagequant.sh \
+    && ./install_libavif.sh \
     && ./install_raqm.sh \
     && ldconfig
 
diff --git a/centos-stream-9-amd64/Dockerfile b/centos-stream-9-amd64/Dockerfile
index 9afc0995..34b5cbb5 100644
--- a/centos-stream-9-amd64/Dockerfile
+++ b/centos-stream-9-amd64/Dockerfile
@@ -9,7 +9,7 @@ RUN yum install -y \
     cargo \
     cmake \
     freetype-devel \
-    gcc \
+    gcc-c++ \
     ghostscript \
     git \
     lcms2-devel \
@@ -18,6 +18,7 @@ RUN yum install -y \
     libwebp-devel \
     make \
     meson \
+    nasm \
     openjpeg2-devel \
     openssl-devel \
     python3-devel \
@@ -47,6 +48,7 @@ RUN bash -c "python3.9 -m pip install virtualenv \
 COPY depends /depends
 RUN cd /depends \
     && ./install_imagequant.sh \
+    && ./install_libavif.sh \
     && ./install_raqm.sh \
     && ldconfig
 
diff --git a/debian-12-bookworm-amd64/Dockerfile b/debian-12-bookworm-amd64/Dockerfile
index de5b0553..8660416b 100644
--- a/debian-12-bookworm-amd64/Dockerfile
+++ b/debian-12-bookworm-amd64/Dockerfile
@@ -47,6 +47,7 @@ RUN apt-get -qq update && DEBIAN_FRONTEND=noninteractive apt-get -y install \
     libwebp-dev \
     libssl-dev \
     meson \
+    nasm \
     netpbm \
     python3-dev \
     python3-numpy \
@@ -77,7 +78,7 @@ RUN virtualenv -p /usr/bin/python3.11 --system-site-packages /vpy3 \
     && chown -R pillow:pillow /vpy3
 
 ADD depends /depends
-RUN cd /depends && ./install_imagequant.sh && ./install_raqm.sh
+RUN cd /depends && ./install_imagequant.sh && ./install_libavif.sh && ./install_raqm.sh
 
 USER pillow
 CMD ["depends/test.sh"]
diff --git a/debian-12-bookworm-x86/Dockerfile b/debian-12-bookworm-x86/Dockerfile
index 66c6e23f..3006de1b 100644
--- a/debian-12-bookworm-x86/Dockerfile
+++ b/debian-12-bookworm-x86/Dockerfile
@@ -47,6 +47,7 @@ RUN apt-get -qq update && DEBIAN_FRONTEND=noninteractive apt-get -y install \
     libwebp-dev \
     libssl-dev \
     meson \
+    nasm \
     netpbm \
     python3-dev \
     python3-numpy \
@@ -77,7 +78,7 @@ RUN virtualenv -p /usr/bin/python3.11 --system-site-packages /vpy3 \
     && chown -R pillow:pillow /vpy3
 
 ADD depends /depends
-RUN cd /depends && ./install_imagequant.sh && ./install_raqm.sh
+RUN cd /depends && ./install_imagequant.sh && ./install_libavif.sh && ./install_raqm.sh
 
 USER pillow
 ENTRYPOINT ["linux32"]
diff --git a/fedora-41-amd64/Dockerfile b/fedora-41-amd64/Dockerfile
index 5171b3b3..3ee4160c 100644
--- a/fedora-41-amd64/Dockerfile
+++ b/fedora-41-amd64/Dockerfile
@@ -6,6 +6,7 @@ RUN dnf install -y \
     gcc \
     harfbuzz-devel \
     lcms2-devel \
+    libavif-devel \
     libimagequant-devel \
     libjpeg-devel \
     libraqm-devel \
diff --git a/gentoo/Dockerfile b/gentoo/Dockerfile
index 292baed6..7f02de7b 100644
--- a/gentoo/Dockerfile
+++ b/gentoo/Dockerfile
@@ -25,7 +25,7 @@ RUN emerge --quiet sudo dev-python/virtualenv dev-util/cargo-c dev-build/meson =
 
 # Install dependencies
 RUN USE="jpeg jpeg2k lcms tiff truetype webp xcb zlib" emerge --quiet --onlydeps dev-python/pillow
-RUN emerge --quiet app-text/ghostscript-gpl dev-python/numpy
+RUN emerge --quiet app-text/ghostscript-gpl dev-python/numpy dev-vcs/git
 
 RUN useradd --uid 1001 pillow \
     && chown pillow:pillow /home/pillow
@@ -39,7 +39,7 @@ RUN virtualenv --system-site-packages /vpy3 \
     && chown -R pillow:pillow /vpy3
 
 ADD depends /depends
-RUN cd /depends && ./install_imagequant.sh && ./install_raqm.sh && ldconfig
+RUN cd /depends && ./install_imagequant.sh && ./install_libavif.sh && ./install_raqm.sh && ldconfig
 
 USER pillow
 CMD ["depends/test.sh"]
diff --git a/ubuntu-22.04-jammy-amd64-valgrind/Dockerfile b/ubuntu-22.04-jammy-amd64-valgrind/Dockerfile
index 1a3d1eb2..7740144a 100644
--- a/ubuntu-22.04-jammy-amd64-valgrind/Dockerfile
+++ b/ubuntu-22.04-jammy-amd64-valgrind/Dockerfile
@@ -15,6 +15,7 @@ RUN apt-get -qq update && DEBIAN_FRONTEND=noninteractive apt-get -y install \
     libtiff5-dev \
     libwebp-dev \
     meson \
+    nasm \
     netpbm \
     python3.10-dbg \
     python3-dev \
@@ -46,6 +47,7 @@ RUN virtualenv -p /usr/bin/python3.10-dbg --system-site-packages /vpy3 \
 
 ADD depends /depends
 RUN cd /depends \
+    && ./install_libavif.sh \
     && ./install_raqm.sh
 
 COPY python.supp /depends
diff --git a/ubuntu-22.04-jammy-amd64/Dockerfile b/ubuntu-22.04-jammy-amd64/Dockerfile
index 5f144e9c..e8924204 100644
--- a/ubuntu-22.04-jammy-amd64/Dockerfile
+++ b/ubuntu-22.04-jammy-amd64/Dockerfile
@@ -24,6 +24,7 @@ RUN apt-get -qq update && DEBIAN_FRONTEND=noninteractive apt-get -y install \
     libxcb-render-util0 \
     libxkbcommon-x11-0 \
     meson \
+    nasm \
     netpbm \
     python3-dev \
     python3-numpy \
@@ -53,6 +54,7 @@ RUN virtualenv -p /usr/bin/python3.10 --system-site-packages /vpy3 \
 
 ADD depends /depends
 RUN cd /depends \
+    && ./install_libavif.sh \
     && ./install_raqm.sh
 
 USER pillow
diff --git a/ubuntu-24.04-noble-amd64/Dockerfile b/ubuntu-24.04-noble-amd64/Dockerfile
index 0f404566..2d32fa35 100644
--- a/ubuntu-24.04-noble-amd64/Dockerfile
+++ b/ubuntu-24.04-noble-amd64/Dockerfile
@@ -4,6 +4,7 @@ RUN apt-get -qq update && DEBIAN_FRONTEND=noninteractive apt-get -y install \
     cmake \
     ghostscript \
     git \
+    libavif-dev \
     libegl-dev \
     libfreetype6-dev \
     libfribidi-dev \
diff --git a/ubuntu-24.04-noble-arm64v8/Dockerfile b/ubuntu-24.04-noble-arm64v8/Dockerfile
index a5826fb0..1f93ab49 100644
--- a/ubuntu-24.04-noble-arm64v8/Dockerfile
+++ b/ubuntu-24.04-noble-arm64v8/Dockerfile
@@ -4,6 +4,7 @@ RUN apt-get -qq update && DEBIAN_FRONTEND=noninteractive apt-get -y install \
     cmake \
     ghostscript \
     git \
+    libavif-dev \
     libegl-dev \
     libfreetype6-dev \
     libfribidi-dev \
diff --git a/ubuntu-24.04-noble-ppc64le/Dockerfile b/ubuntu-24.04-noble-ppc64le/Dockerfile
index e89231e5..63b8e167 100644
--- a/ubuntu-24.04-noble-ppc64le/Dockerfile
+++ b/ubuntu-24.04-noble-ppc64le/Dockerfile
@@ -4,6 +4,7 @@ RUN apt-get -qq update && DEBIAN_FRONTEND=noninteractive apt-get -y install \
     cmake \
     ghostscript \
     git \
+    libavif-dev \
     libfreetype6-dev \
     libfribidi-dev \
     libharfbuzz-dev \
diff --git a/ubuntu-24.04-noble-s390x/Dockerfile b/ubuntu-24.04-noble-s390x/Dockerfile
index 127acbc8..a3ffbc1a 100644
--- a/ubuntu-24.04-noble-s390x/Dockerfile
+++ b/ubuntu-24.04-noble-s390x/Dockerfile
@@ -4,6 +4,7 @@ RUN apt-get -qq update && DEBIAN_FRONTEND=noninteractive apt-get -y install \
     cmake \
     ghostscript \
     git \
+    libavif-dev \
     libfreetype6-dev \
     libfribidi-dev \
     libharfbuzz-dev \