diff --git a/api/v1/auth.go b/api/v1/auth.go
index 46bea57..9747d8a 100644
--- a/api/v1/auth.go
+++ b/api/v1/auth.go
@@ -13,6 +13,7 @@ import (
 
 	"github.com/boojack/slash/api/auth"
 	storepb "github.com/boojack/slash/proto/gen/store"
+	"github.com/boojack/slash/server/service/license"
 	"github.com/boojack/slash/store"
 )
 
@@ -77,6 +78,16 @@ func (s *APIV1Service) registerAuthRoutes(g *echo.Group, secret string) {
 			return echo.NewHTTPError(http.StatusForbidden, "sign up has been disabled")
 		}
 
+		if !s.LicenseService.IsFeatureEnabled(license.FeatureTypeUnlimitedAccounts) {
+			userList, err := s.Store.ListUsers(ctx, &store.FindUser{})
+			if err != nil {
+				return echo.NewHTTPError(http.StatusInternalServerError, "Failed to list users").SetInternal(err)
+			}
+			if len(userList) >= 5 {
+				return echo.NewHTTPError(http.StatusBadRequest, "Maximum number of users reached")
+			}
+		}
+
 		signup := &SignUpRequest{}
 		if err := json.NewDecoder(c.Request().Body).Decode(signup); err != nil {
 			return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("malformatted signup request, err: %s", err)).SetInternal(err)
diff --git a/api/v1/user.go b/api/v1/user.go
index 81776d2..7075f0b 100644
--- a/api/v1/user.go
+++ b/api/v1/user.go
@@ -11,6 +11,7 @@ import (
 	"golang.org/x/crypto/bcrypt"
 
 	"github.com/boojack/slash/internal/util"
+	"github.com/boojack/slash/server/service/license"
 	"github.com/boojack/slash/store"
 )
 
@@ -102,6 +103,16 @@ func (s *APIV1Service) registerUserRoutes(g *echo.Group) {
 			return echo.NewHTTPError(http.StatusUnauthorized, "Unauthorized to create user")
 		}
 
+		if !s.LicenseService.IsFeatureEnabled(license.FeatureTypeUnlimitedAccounts) {
+			userList, err := s.Store.ListUsers(ctx, &store.FindUser{})
+			if err != nil {
+				return echo.NewHTTPError(http.StatusInternalServerError, "Failed to list users").SetInternal(err)
+			}
+			if len(userList) >= 5 {
+				return echo.NewHTTPError(http.StatusBadRequest, "Maximum number of users reached")
+			}
+		}
+
 		userCreate := &CreateUserRequest{}
 		if err := json.NewDecoder(c.Request().Body).Decode(userCreate); err != nil {
 			return echo.NewHTTPError(http.StatusBadRequest, "Malformatted post user request").SetInternal(err)
diff --git a/api/v2/user_service.go b/api/v2/user_service.go
index 21b1f37..dfe77d3 100644
--- a/api/v2/user_service.go
+++ b/api/v2/user_service.go
@@ -81,7 +81,7 @@ func (s *UserService) CreateUser(ctx context.Context, request *apiv2pb.CreateUse
 		if err != nil {
 			return nil, status.Errorf(codes.Internal, "failed to list users: %v", err)
 		}
-		if len(userList) >= 3 {
+		if len(userList) >= 5 {
 			return nil, status.Errorf(codes.ResourceExhausted, "maximum number of users reached")
 		}
 	}
diff --git a/proto/gen/api/v2/README.md b/proto/gen/api/v2/README.md
index 8812764..aa2c257 100644
--- a/proto/gen/api/v2/README.md
+++ b/proto/gen/api/v2/README.md
@@ -985,8 +985,9 @@
 
 | Field | Type | Label | Description |
 | ----- | ---- | ----- | ----------- |
-| mode | [string](#string) |  |  |
-| enable_signup | [bool](#bool) |  |  |
+| mode | [string](#string) |  | Current workspace mode: dev, prod. |
+| plan | [PlanType](#slash-api-v2-PlanType) |  | The workspace plan. |
+| enable_signup | [bool](#bool) |  | Whether to enable other users to sign up. |
 | custom_style | [string](#string) |  | The custom style. |
 | custom_script | [string](#string) |  | The custom script. |