diff --git a/.gitignore b/.gitignore
index 0e5d758f2..9d43bce6c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -154,4 +154,14 @@ out
 .schema-diff/
 
 # rdp e2e automation
-test_output*
\ No newline at end of file
+test_output*
+# plugin main binaries produced by `go build` in single-main modules
+/plugins/boundary/mains/aws/aws
+/plugins/boundary/mains/azure/azure
+/plugins/boundary/mains/gcp/gcp
+/plugins/boundary/mains/minio/minio
+/plugins/kms/mains/*/*
+!/plugins/kms/mains/*/*.go
+!/plugins/kms/mains/*/go.mod
+!/plugins/kms/mains/*/go.sum
+!/plugins/kms/mains/*/*.md