diff --git a/storage/bucket.go b/storage/bucket.go
index 2746ae459585..55ad121c2852 100644
--- a/storage/bucket.go
+++ b/storage/bucket.go
@@ -28,12 +28,12 @@ import (
 	"cloud.google.com/go/internal/optional"
 	"cloud.google.com/go/internal/trace"
 	storagepb "cloud.google.com/go/storage/internal/apiv2/stubs"
-	"github.com/googleapis/go-type-adapters/adapters"
 	"google.golang.org/api/googleapi"
 	"google.golang.org/api/iamcredentials/v1"
 	"google.golang.org/api/iterator"
 	"google.golang.org/api/option"
 	raw "google.golang.org/api/storage/v1"
+	dpb "google.golang.org/genproto/googleapis/type/date"
 	"google.golang.org/protobuf/proto"
 )
 
@@ -1613,13 +1613,13 @@ func toProtoLifecycle(l Lifecycle) *storagepb.Bucket_Lifecycle {
 		}
 
 		if !r.Condition.CreatedBefore.IsZero() {
-			rr.Condition.CreatedBefore = adapters.TimeToProtoDate(r.Condition.CreatedBefore)
+			rr.Condition.CreatedBefore = timeToProtoDate(r.Condition.CreatedBefore)
 		}
 		if !r.Condition.CustomTimeBefore.IsZero() {
-			rr.Condition.CustomTimeBefore = adapters.TimeToProtoDate(r.Condition.CustomTimeBefore)
+			rr.Condition.CustomTimeBefore = timeToProtoDate(r.Condition.CustomTimeBefore)
 		}
 		if !r.Condition.NoncurrentTimeBefore.IsZero() {
-			rr.Condition.NoncurrentTimeBefore = adapters.TimeToProtoDate(r.Condition.NoncurrentTimeBefore)
+			rr.Condition.NoncurrentTimeBefore = timeToProtoDate(r.Condition.NoncurrentTimeBefore)
 		}
 		rl.Rule = append(rl.Rule, rr)
 	}
@@ -1716,13 +1716,13 @@ func toLifecycleFromProto(rl *storagepb.Bucket_Lifecycle) Lifecycle {
 		}
 
 		if rr.GetCondition().GetCreatedBefore() != nil {
-			r.Condition.CreatedBefore = adapters.ProtoDateToUTCTime(rr.GetCondition().GetCreatedBefore())
+			r.Condition.CreatedBefore = protoDateToUTCTime(rr.GetCondition().GetCreatedBefore())
 		}
 		if rr.GetCondition().GetCustomTimeBefore() != nil {
-			r.Condition.CustomTimeBefore = adapters.ProtoDateToUTCTime(rr.GetCondition().GetCustomTimeBefore())
+			r.Condition.CustomTimeBefore = protoDateToUTCTime(rr.GetCondition().GetCustomTimeBefore())
 		}
 		if rr.GetCondition().GetNoncurrentTimeBefore() != nil {
-			r.Condition.NoncurrentTimeBefore = adapters.ProtoDateToUTCTime(rr.GetCondition().GetNoncurrentTimeBefore())
+			r.Condition.NoncurrentTimeBefore = protoDateToUTCTime(rr.GetCondition().GetNoncurrentTimeBefore())
 		}
 		l.Rules = append(l.Rules, r)
 	}
@@ -2236,3 +2236,28 @@ func (rpo RPO) String() string {
 		return rpoUnknown
 	}
 }
+
+// protoDateToUTCTime returns a new Time based on the google.type.Date, in UTC.
+//
+// Hours, minutes, seconds, and nanoseconds are set to 0.
+func protoDateToUTCTime(d *dpb.Date) time.Time {
+	return protoDateToTime(d, time.UTC)
+}
+
+// protoDateToTime returns a new Time based on the google.type.Date and provided
+// *time.Location.
+//
+// Hours, minutes, seconds, and nanoseconds are set to 0.
+func protoDateToTime(d *dpb.Date, l *time.Location) time.Time {
+	return time.Date(int(d.GetYear()), time.Month(d.GetMonth()), int(d.GetDay()), 0, 0, 0, 0, l)
+}
+
+// timeToProtoDate returns a new google.type.Date based on the provided time.Time.
+// The location is ignored, as is anything more precise than the day.
+func timeToProtoDate(t time.Time) *dpb.Date {
+	return &dpb.Date{
+		Year:  int32(t.Year()),
+		Month: int32(t.Month()),
+		Day:   int32(t.Day()),
+	}
+}
diff --git a/storage/go.mod b/storage/go.mod
index 50d18224b4fc..36e413806e11 100644
--- a/storage/go.mod
+++ b/storage/go.mod
@@ -10,7 +10,6 @@ require (
 	github.com/google/go-cmp v0.5.8
 	github.com/google/uuid v1.3.0
 	github.com/googleapis/gax-go/v2 v2.4.0
-	github.com/googleapis/go-type-adapters v1.0.0
 	golang.org/x/oauth2 v0.0.0-20220622183110-fd043fe589d2
 	golang.org/x/xerrors v0.0.0-20220609144429-65e65417b02f
 	google.golang.org/api v0.85.0
diff --git a/storage/go.sum b/storage/go.sum
index 246c7c6f9231..ab45b0253f37 100644
--- a/storage/go.sum
+++ b/storage/go.sum
@@ -179,7 +179,6 @@ github.com/googleapis/gax-go/v2 v2.2.0/go.mod h1:as02EH8zWkzwUoLbBaFeQ+arQaj/Oth
 github.com/googleapis/gax-go/v2 v2.3.0/go.mod h1:b8LNqSzNabLiUpXKkY7HAR5jr6bIT99EXz9pXxye9YM=
 github.com/googleapis/gax-go/v2 v2.4.0 h1:dS9eYAjhrE2RjmzYw2XAPvcXfmcQLtFEQWn0CR82awk=
 github.com/googleapis/gax-go/v2 v2.4.0/go.mod h1:XOTVJ59hdnfJLIP/dh8n5CGryZR2LxK9wbMD5+iXC6c=
-github.com/googleapis/go-type-adapters v1.0.0 h1:9XdMn+d/G57qq1s8dNc5IesGCXHf6V2HZ2JwRxfA2tA=
 github.com/googleapis/go-type-adapters v1.0.0/go.mod h1:zHW75FOG2aur7gAO2B+MLby+cLsWGBF62rFAi7WjWO4=
 github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=