diff --git a/balancer/balancer.go b/balancer/balancer.go
index 531a174a8399..9258858ed755 100644
--- a/balancer/balancer.go
+++ b/balancer/balancer.go
@@ -203,11 +203,6 @@ type ConfigParser interface {
 	ParseConfig(LoadBalancingConfigJSON json.RawMessage) (serviceconfig.LoadBalancingConfig, error)
 }
 
-// PickOptions is a type alias of PickInfo for legacy reasons.
-//
-// Deprecated: use PickInfo instead.
-type PickOptions = PickInfo
-
 // PickInfo contains additional information for the Pick operation.
 type PickInfo struct {
 	// FullMethodName is the method name that NewClientStream() is called
diff --git a/resolver/resolver.go b/resolver/resolver.go
index 03567d7be74b..fe14b2fb9826 100644
--- a/resolver/resolver.go
+++ b/resolver/resolver.go
@@ -124,11 +124,6 @@ type Address struct {
 	Metadata interface{}
 }
 
-// BuildOption is a type alias of BuildOptions for legacy reasons.
-//
-// Deprecated: use BuildOptions instead.
-type BuildOption = BuildOptions
-
 // BuildOptions includes additional information for the builder to create
 // the resolver.
 type BuildOptions struct {
@@ -235,11 +230,6 @@ type Builder interface {
 	Scheme() string
 }
 
-// ResolveNowOption is a type alias of ResolveNowOptions for legacy reasons.
-//
-// Deprecated: use ResolveNowOptions instead.
-type ResolveNowOption = ResolveNowOptions
-
 // ResolveNowOptions includes additional information for ResolveNow.
 type ResolveNowOptions struct{}