diff --git a/proto/project_membership/v1/project_membership_v1.proto b/proto/project_membership/v1/project_membership_v1.proto
new file mode 100644
index 0000000..79b71fd
--- /dev/null
+++ b/proto/project_membership/v1/project_membership_v1.proto
@@ -0,0 +1,27 @@
+syntax = "proto3";
+package project_membership.v1;
+option go_package = "gitea.badhouseplants.net/softplayer/softplayer-go-proto/pkg/project_membership/v1";
+
+service ProjectMembershipService {
+  rpc AddUserToProject(AddUserToProjectRequest) returns (AddUserToProjectResponse) {}
+  rpc ChangeMembership(ChangeMembershipRequest) returns (ChangeMembershipResponse) {}
+  rpc RemoveMembership(RemoveMembershipRequest) returns (RemoveMembershipResponse) {}
+  rpc GetMembership(GetMembershipRequest) returns (GetMembershipResponse) {}
+  rpc ListMemberships(ListMembershipsRequest) returns (stream ListMembershipsResponse) {}
+}
+
+message AddUserToProjectRequest {}
+message AddUserToProjectResponse {}
+
+message ChangeMembershipRequest {}
+message ChangeMembershipResponse {}
+
+message RemoveMembershipRequest {}
+message RemoveMembershipResponse {}
+
+message GetMembershipRequest {}
+message GetMembershipResponse {}
+
+message ListMembershipsRequest {}
+message ListMembershipsResponse {}
+
diff --git a/proto/projects/v1/projects_v1.proto b/proto/projects/v1/projects_v1.proto
index 9c69744..ac2e5d7 100644
--- a/proto/projects/v1/projects_v1.proto
+++ b/proto/projects/v1/projects_v1.proto
@@ -1,4 +1,3 @@
-/// Protobuf definitions for the accounts service.
 syntax = "proto3";
 package projects.v1;
 option go_package = "gitea.badhouseplants.net/softplayer/softplayer-go-proto/pkg/projects/v1";