diff --git a/metropolis/node/build/mkucode/spec/gomod-generated-placeholder.go b/metropolis/node/build/mkucode/spec/gomod-generated-placeholder.go
new file mode 100644
index 0000000..f09cd57
--- /dev/null
+++ b/metropolis/node/build/mkucode/spec/gomod-generated-placeholder.go
@@ -0,0 +1 @@
+package spec
diff --git a/metropolis/node/core/curator/proto/api/gomod-generated-placeholder.go b/metropolis/node/core/curator/proto/api/gomod-generated-placeholder.go
new file mode 100644
index 0000000..778f64e
--- /dev/null
+++ b/metropolis/node/core/curator/proto/api/gomod-generated-placeholder.go
@@ -0,0 +1 @@
+package api
diff --git a/metropolis/node/core/curator/proto/private/gomod-generated-placeholder.go b/metropolis/node/core/curator/proto/private/gomod-generated-placeholder.go
new file mode 100644
index 0000000..735e4dc
--- /dev/null
+++ b/metropolis/node/core/curator/proto/private/gomod-generated-placeholder.go
@@ -0,0 +1 @@
+package private