diff --git a/go.mod b/go.mod
index 38f532d..4f748c0 100644
--- a/go.mod
+++ b/go.mod
@@ -5,5 +5,5 @@ go 1.20
 require (
 	connectrpc.com/connect v1.11.0
 	github.com/google/go-cmp v0.5.9
-	google.golang.org/protobuf v1.31.0
+	google.golang.org/protobuf v1.33.0
 )
diff --git a/go.sum b/go.sum
index 1240e02..20ff83b 100644
--- a/go.sum
+++ b/go.sum
@@ -1,10 +1,6 @@
 connectrpc.com/connect v1.11.0 h1:Av2KQXxSaX4vjqhf5Cl01SX4dqYADQ38eBtr84JSUBk=
 connectrpc.com/connect v1.11.0/go.mod h1:3AGaO6RRGMx5IKFfqbe3hvK1NqLosFNP2BxDYTPmNPo=
-github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
-github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
 github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
-google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
+google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
diff --git a/go.work.sum b/go.work.sum
index 57a60bf..2daaabf 100644
--- a/go.work.sum
+++ b/go.work.sum
@@ -1,3 +1,5 @@
 connectrpc.com/grpcreflect v1.1.0/go.mod h1:QBX/Lf8oW35iCFCBYlPVTM5xrlKG1dMC+55klHv7YvE=
 github.com/golang/protobuf v1.5.0 h1:LUVKkCeviFUMKqHa4tXIIij/lbhnMbP7Fn5wKdKkRh4=
+github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
diff --git a/internal/gen/go/connect/reflecttest/v1/reflecttest.pb.go b/internal/gen/go/connect/reflecttest/v1/reflecttest.pb.go
index eb46fa7..2158509 100644
--- a/internal/gen/go/connect/reflecttest/v1/reflecttest.pb.go
+++ b/internal/gen/go/connect/reflecttest/v1/reflecttest.pb.go
@@ -14,7 +14,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        (unknown)
 // source: connect/reflecttest/v1/reflecttest.proto
 
diff --git a/internal/gen/go/connect/reflecttest/v1/reflecttest_ext.pb.go b/internal/gen/go/connect/reflecttest/v1/reflecttest_ext.pb.go
index bb44bd0..2c7313a 100644
--- a/internal/gen/go/connect/reflecttest/v1/reflecttest_ext.pb.go
+++ b/internal/gen/go/connect/reflecttest/v1/reflecttest_ext.pb.go
@@ -14,7 +14,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        (unknown)
 // source: connect/reflecttest/v1/reflecttest_ext.proto
 
diff --git a/internal/gen/go/connectext/grpc/reflection/v1/reflection.pb.go b/internal/gen/go/connectext/grpc/reflection/v1/reflection.pb.go
index 6c36a9d..fca1e4a 100644
--- a/internal/gen/go/connectext/grpc/reflection/v1/reflection.pb.go
+++ b/internal/gen/go/connectext/grpc/reflection/v1/reflection.pb.go
@@ -21,7 +21,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        (unknown)
 // source: connectext/grpc/reflection/v1/reflection.proto
 
diff --git a/internal/resolvertest/go.mod b/internal/resolvertest/go.mod
index c9fca46..852a9b0 100644
--- a/internal/resolvertest/go.mod
+++ b/internal/resolvertest/go.mod
@@ -6,7 +6,7 @@ require (
 	connectrpc.com/grpchealth v1.2.0
 	connectrpc.com/grpcreflect v1.2.0
 	github.com/google/go-cmp v0.5.9
-	google.golang.org/protobuf v1.31.0
+	google.golang.org/protobuf v1.33.0
 )
 
 require connectrpc.com/connect v1.11.0 // indirect
diff --git a/internal/resolvertest/go.sum b/internal/resolvertest/go.sum
index f38bd23..ee3593e 100644
--- a/internal/resolvertest/go.sum
+++ b/internal/resolvertest/go.sum
@@ -4,11 +4,7 @@ connectrpc.com/grpchealth v1.2.0 h1:aHP33Bki+F2jPNI1mFVSFG7v0qJrgmfbg7X7nOdSj0M=
 connectrpc.com/grpchealth v1.2.0/go.mod h1:fZos12C4p/ZaZC6OwBGZUM+i/fhnRhv75ax/6V/zIeM=
 connectrpc.com/grpcreflect v1.2.0 h1:Q6og1S7HinmtbEuBvARLNwYmTbhEGRpHDhqrPNlmK+U=
 connectrpc.com/grpcreflect v1.2.0/go.mod h1:nwSOKmE8nU5u/CidgHtPYk1PFI3U9ignz7iDMxOYkSY=
-github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
-github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
 github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
-google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
+google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=