diff --git a/profiles/base/build.sh b/profiles/base/build.sh
index c769bd2..1df643f 100755
--- a/profiles/base/build.sh
+++ b/profiles/base/build.sh
@@ -73,7 +73,8 @@ fi
 for (( i=0; i<${#package_names[@]}; i++ )); do
 	printf "Downloading %s " "${package_names[$i]}"
 	printf "v%s... " "${package_versions[$i]}"
-	if eval curl -s --output-dir "tmp" -LO "${package_sources[$i]}"; then
+	# "-C -" will prevent curl from downloading files that have already been downloaded
+	if eval curl -C - -s --output-dir "tmp" -LO "${package_sources[$i]}"; then
 		printf "%b\n" "$success_message"
 	else
 		printf "%b\n" "$error_message"