diff --git a/.devcontainer/features/vcpkg-cache/install.sh b/.devcontainer/features/vcpkg-cache/install.sh
index cbd928d0688..5c9cdb5b815 100644
--- a/.devcontainer/features/vcpkg-cache/install.sh
+++ b/.devcontainer/features/vcpkg-cache/install.sh
@@ -28,6 +28,7 @@ python3 ./Toolchain/BuildVcpkg.py
 # Set the binary cache directory to the one we intend to use at container runtime
 export VCPKG_ROOT="${PWD}/Build/vcpkg"
 export VCPKG_BINARY_SOURCES="clear;files,${CACHE_DIR},readwrite"
+export X_VCPKG_ASSET_SOURCES="clear;x-azurl,https://vcpkg-cache.app.ladybird.org/ladybird/source-assets/,,read"
 
 # Check options to see which versions we should build
 if [ "${RELEASE_TRIPLET}" = "true" ]; then