diff --git a/ci/install-dav1d.sh b/ci/install-dav1d.sh
deleted file mode 100644
index c14f154e..00000000
--- a/ci/install-dav1d.sh
+++ /dev/null
@@ -1,11 +0,0 @@
-set -e
-
-RELEASE=1.1.0
-
-git clone https://code.videolan.org/videolan/dav1d.git --branch $RELEASE
-cd dav1d
-meson build -D prefix=/usr/local
-ninja -C build
-ninja -C build install
-cd ..
-rm -rf dav1d
diff --git a/ci/install-rust-ext.sh b/ci/install-rust-ext.sh
deleted file mode 100755
index 59f64eb5..00000000
--- a/ci/install-rust-ext.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-source ./ci/env.sh
-
-set -e
-export CARGO_HOME='/usr/local/cargo'
-
-cargo install cargo-c --version 0.9.15+cargo-0.67