Migrating off the Lambda Go 1.x Runtime

AWS is deprecating its Go1.x runtime in favor of a more generic Amazon Linux 2 runtime. I don't completely understand the reasons why, and this post isn't about that. There's a pretty good post of theres on the specifics:

Migrating AWS Lambda functions from the Go1.x runtime to the custom runtime on Amazon Linux 2

Here's the dirty details on how you can upgrade your functions, I found it to be very easy.

GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build \
-  -o main \
+  -o bootstrap \
+  -tags lambda.norpc \

The differences here:

That's really it! Then you can upload your new zip file and change the runtime in the UI. You can probably change this via the CLI as well, although I didn't want to learn the command to do so for a one-off.