diff --git a/pkgs/build-support/dotnet/nuget-to-nix/nuget-to-nix.sh b/pkgs/build-support/dotnet/nuget-to-nix/nuget-to-nix.sh
index 92b0200ec034..aa6221321dbf 100755
--- a/pkgs/build-support/dotnet/nuget-to-nix/nuget-to-nix.sh
+++ b/pkgs/build-support/dotnet/nuget-to-nix/nuget-to-nix.sh
@@ -22,6 +22,7 @@ export DOTNET_NOLOGO=1
 export DOTNET_CLI_TELEMETRY_OPTOUT=1
 
 mapfile -t sources < <(dotnet nuget list source --format short | awk '/^E / { print $2 }')
+wait "$!"
 
 declare -a remote_sources
 declare -A base_addresses