diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2187f4d..6c78473 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -94,7 +94,7 @@ jobs:
           rustup target add "$target"
 
           # Add ARM64 Ubuntu repos
-          sed -E '/^deb/!d; s|.+/|deb [arch=arm64] http://ports.ubuntu.com/|' /etc/apt/sources.list | sudo tee /etc/apt/sources.list.d/sources-arm64.list
+          sed -E '/^deb/!d; s|.+/([^/]+\.txt)?|deb [arch=arm64] http://ports.ubuntu.com/|' /etc/apt/sources.list | sudo tee /etc/apt/sources.list.d/sources-arm64.list
           # Mark existing repos as x86_64 only
           sudo sed -i -E 's/^deb/deb [arch=amd64]/' /etc/apt/sources.list
           sudo dpkg --add-architecture arm64