diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index b226482..3834500 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -21,6 +21,9 @@
 	"mounts": [
 		"source=/etc/timezone,target=/etc/timezone,type=bind,readonly"
 	],
+	"containerEnv": {
+		"CARGO_REGISTRIES_CRATES_IO_PROTOCOL": "sparse"
+	},
 
 	"customizations": {
 		"vscode": {