diff --git a/wercker.yml b/wercker.yml
index de351fd2..98234583 100644
--- a/wercker.yml
+++ b/wercker.yml
@@ -100,49 +100,49 @@ build:
         - script:
                 name: test mariadb
                 code: |
-                    GORM_DIALECT=mysql GORM_DSN="gorm:gorm@tcp(mariadb:3306)/gorm?charset=utf8&parseTime=True" go test ./...
+                    GORM_DIALECT=mysql GORM_DSN="gorm:gorm@tcp(mariadb:3306)/gorm?charset=utf8&parseTime=True" go test -race ./...
 
         - script:
                 name: test mysql5.7
                 code: |
-                    GORM_DIALECT=mysql GORM_DSN="gorm:gorm@tcp(mysql57:3306)/gorm?charset=utf8&parseTime=True" go test ./...
+                    GORM_DIALECT=mysql GORM_DSN="gorm:gorm@tcp(mysql57:3306)/gorm?charset=utf8&parseTime=True" go test -race ./...
 
         - script:
                 name: test mysql5.6
                 code: |
-                    GORM_DIALECT=mysql GORM_DSN="gorm:gorm@tcp(mysql56:3306)/gorm?charset=utf8&parseTime=True" go test ./...
+                    GORM_DIALECT=mysql GORM_DSN="gorm:gorm@tcp(mysql56:3306)/gorm?charset=utf8&parseTime=True" go test -race ./...
 
         - script:
                 name: test mysql5.5
                 code: |
-                    GORM_DIALECT=mysql GORM_DSN="gorm:gorm@tcp(mysql55:3306)/gorm?charset=utf8&parseTime=True" go test ./...
+                    GORM_DIALECT=mysql GORM_DSN="gorm:gorm@tcp(mysql55:3306)/gorm?charset=utf8&parseTime=True" go test -race ./...
 
         - script:
                 name: test postgres
                 code: |
-                    GORM_DIALECT=postgres GORM_DSN="host=postgres user=gorm password=gorm DB.name=gorm port=5432 sslmode=disable" go test ./...
+                    GORM_DIALECT=postgres GORM_DSN="host=postgres user=gorm password=gorm DB.name=gorm port=5432 sslmode=disable" go test -race ./...
 
         - script:
                 name: test postgres96
                 code: |
-                    GORM_DIALECT=postgres GORM_DSN="host=postgres96 user=gorm password=gorm DB.name=gorm port=5432 sslmode=disable" go test ./...
+                    GORM_DIALECT=postgres GORM_DSN="host=postgres96 user=gorm password=gorm DB.name=gorm port=5432 sslmode=disable" go test -race ./...
 
         - script:
                 name: test postgres95
                 code: |
-                    GORM_DIALECT=postgres GORM_DSN="host=postgres95 user=gorm password=gorm DB.name=gorm port=5432 sslmode=disable" go test ./...
+                    GORM_DIALECT=postgres GORM_DSN="host=postgres95 user=gorm password=gorm DB.name=gorm port=5432 sslmode=disable" go test -race ./...
 
         - script:
                 name: test postgres94
                 code: |
-                    GORM_DIALECT=postgres GORM_DSN="host=postgres94 user=gorm password=gorm DB.name=gorm port=5432 sslmode=disable" go test ./...
+                    GORM_DIALECT=postgres GORM_DSN="host=postgres94 user=gorm password=gorm DB.name=gorm port=5432 sslmode=disable" go test -race ./...
 
         - script:
                 name: test postgres93
                 code: |
-                    GORM_DIALECT=postgres GORM_DSN="host=postgres93 user=gorm password=gorm DB.name=gorm port=5432 sslmode=disable" go test ./...
+                    GORM_DIALECT=postgres GORM_DSN="host=postgres93 user=gorm password=gorm DB.name=gorm port=5432 sslmode=disable" go test -race ./...
 
         - script:
                 name: test mssql
                 code: |
-                    GORM_DIALECT=mssql GORM_DSN="sqlserver://gorm:LoremIpsum86@mssql:1433?database=gorm" go test ./...
+                    GORM_DIALECT=mssql GORM_DSN="sqlserver://gorm:LoremIpsum86@mssql:1433?database=gorm" go test -race ./...