diff --git a/api/v1/openapi.yaml b/api/v1/openapi.yaml
index ee92da2..1c6ec06 100644
--- a/api/v1/openapi.yaml
+++ b/api/v1/openapi.yaml
@@ -158,7 +158,7 @@ components:
           type: string
         days:
           type: integer
-          format: int32
+          format: int8
           minimum: 1
           maximum: 5
       required:
diff --git a/internal/server/api.gen.go b/internal/server/api.gen.go
index e0ea6ec..c997474 100644
--- a/internal/server/api.gen.go
+++ b/internal/server/api.gen.go
@@ -33,7 +33,7 @@ type ListTrainingsResponse = []Training
 
 // NewTraining defines model for NewTraining.
 type NewTraining struct {
-	Days int32  `json:"days"`
+	Days int8   `json:"days"`
 	Name string `json:"name"`
 }
 
@@ -57,7 +57,7 @@ type ProblemDetails struct {
 
 // Training defines model for Training.
 type Training struct {
-	Days int32      `json:"days"`
+	Days int8       `json:"days"`
 	Id   TrainingID `json:"id"`
 	Name string     `json:"name"`
 }
@@ -583,27 +583,27 @@ func (sh *strictHandler) UpdateTraining(ctx *fiber.Ctx, trainingID TrainingID) e
 // Base64 encoded, gzipped, json marshaled Swagger object
 var swaggerSpec = []string{
 
-	"H4sIAAAAAAAC/9RXz3LbthN+FQx+v1tpUc6fSYenpnWbaCZN3MTpxfUBApckHBKAgaVsjYZP0lPfpX2v",
-	"DgCRIiXakRtlHJ8sg8Dut98uPuyuKFeVVhIkWpqsqGaGVYBg/H9nhgkpZD47cf+lYLkRGoWSNOm+kdkJ",
-	"jahwS5phQSMqWQU0obg5HFEDV7UwkNIETQ0RtbyAijmr/zeQ0YT+L94AicNXG/f8N03jrFitpAUPbiYR",
-	"jGTlz8Yo4xa4kggS3U+mdSk4c1BjbdS8hOq7S+twr/Z0fRpOnQAyUdrgfkhA65+AB9BEdCYXrBTpTOoa",
-	"Hw6Vx0CEA7GB9lbhL6qW6UPBequQZA5AC6lpa8Dn8icDDKFN93u4qsF6bNooDQZFSHnKlv5vpkzFkCZU",
-	"SHz6hEa0YjeiqiuaPI9oJWT4fRxRXGoI2yAHT0QozlX7xaIRMqehuNoSPQ+7ouDvojOj5pfA0VnZxhvK",
-	"0pNZlu8ympzfTdhbuG4P0yZa7TjYDlyk97wqq0E4IqUXzUUT0VeAjw/0G2E71LYPWyBUdl8fLm1rxMwY",
-	"tvS3ohfRt1tsW7drR4k/+EgJFgwJZ8YIsAQLIGk4QFRGmAz3jgjpfr8+OzslrZhOyAcAUiBqm8RxypCh",
-	"YfwTmIkAzCbK5HGqeFxgVcYm4y++n74gmTKkUgaIkIEeoeTkD0mjbQ49hF3IL0lRV0weGWApm5dA4EaX",
-	"THo7xGrgIhOcoCJYCEsU57UxIDm4WFxoa5ma0GibW/cUWWSSw5jXj+9nxEAGwZhnTKQgUWQtaZ3z+zm1",
-	"yLAeyc1ZAYHtsIFwlQLJQYJhCCmZL71lZUQuJLFgFmA8uXvH3as2FFjCHlzbuqqYWW7ZJM7gaGxh4b+Q",
-	"+RnTW/fAf23D6CiN2iLqZXbslvQv8retZ8OuqpOXuhbpDkcRvTnK1dF6sW2pJmf93qrbcSQqrUx4N10r",
-	"ltBcYMnmk4oZsMXVhKsqLq7iZZ6nhllRxvpTHmPHQRPRjzp9VA/xNt7H8aY1XqYy1TZijHuOofJiSQWr",
-	"flioSwRe+My5vG366t/VJf79Jy/Ir8zAP3/RiNbGnWoV/Pr6erJzuoloKTisuVlbOjVKGwHIzLKnH9TZ",
-	"ta9/Iy9PZzSiCzA23Pjp5HgydRuVBsm0oAl96pciX26en3hx3BWUX8jBh+Y49Oo+S2kyfNHpVl//ZDq9",
-	"o0G9X2M63jqM9KcvSSkseknscDURfR6wjLnoMMfDQcR3tkFh15ESVpY9sxFF5rg5pxsKnCxoZUeoGnaa",
-	"60kKLP6o0uXBaBpvv5vhZXSDW7OTq+OvBuL2ZHWjJ/dHUpepZ/tlantAO0SOA3DCiITrLs+3pLmJhlck",
-	"Xm3G5CY8siUg7NbBiV/v1UF/Ur9F5DZbBqp0sZPEZ3eM9wHQmuNnn2dqOGkegt8QOmEdt65t8i/f+EUa",
-	"lZze5HNg8g6nVmPT2ahWYW+meaCkvALcPyO6HsnI8On+8qQcXhbHm6G9ZHH61UDsIYu1P/KFsvhAdRXC",
-	"3be0/Fk/NYWaGRLyRnFWkhQWUCpdgcT1hDVomZI4Lt2+QllMnk6nU19Oa2fbFt+1FWwJm6saB8/6uqva",
-	"4Gsumn8DAAD//4xDbzZgFQAA",
+	"H4sIAAAAAAAC/9RXwXLbNhN+FQz+/1ZalJtkkuGpad0mmkkTN3F6cX2AwCUJhwRgYClbo+GT9NR3ad+r",
+	"A0CkSIl25EYZxyfLILD77beLD7srylWllQSJliYrqplhFSAY/9+ZYUIKmc9O3H8pWG6ERqEkTbpvZHZC",
+	"IyrckmZY0IhKVgFNKG4OR9TAVS0MpDRBU0NELS+gYs7q/w1kNKH/izdA4vDVxj3/TdM4K1YracGDm0kE",
+	"I1n5szHKuAWuJIJE95NpXQrOHNRYGzUvofru0jrcqz1dn4ZTJ4BMlDa4HxLQ+ifgATQRnckFK0U6k7rG",
+	"h0PlMRDhQGygvVX4i6pl+lCw3iokmQPQQmraGvC5/MkAQ2jT/R6uarAemzZKg0ERUp6ypf+bKVMxpAkV",
+	"El/QiFbsRlR1RZNnEa2EDL+PI4pLDWEX5OB5CLW5ar9YNELmNNRWW6HnYVcU3F10ZtT8Ejg6K9twQ1V6",
+	"LsvyXUaT87v5egvX7WHaRKsdB9txi/SeN2U1CEek9KK5aCL6CvDxgX4jbIfa9mELhMru68OlbY2YGcOW",
+	"/lL0Ivpma23rbu3o8AcfKMGCIeHMGAGWYAEkDQeIygiT4dYRId3v12dnp6SV0gn5AEAKRG2TOE4ZMjSM",
+	"fwIzEYDZRJk8ThWPC6zK2GT8+Yvpc5IpQyplgAgZ2BFKTv6QNNqm0EPYhfySFHXF5JEBlrJ5CQRudMmk",
+	"t0OsBi4ywQkqgoWwRHFeGwOSg4vFhbYWqQmNtrl1D5FFJjmMef34fkYMZBCMecZEChJF1pLWOb+fU4sM",
+	"65HcnBUQ2A4bCFcpkBwkGIaQkvnSW1ZG5EISC2YBxpO7d9y9akOBJezBta2ripnllk3iDI7GFhb+C5mf",
+	"Mb11D/zXNoyO0qgtol5mx25J/x5/23I27Kk6dalrke5wFNGbo1wdrRfbhmpy1u+suh1HotLKhFfTNWIJ",
+	"zQWWbD6pmAFbXE24quLiKl7meWqYFWWsP+Uxdhw0Ef2o08f0DG/DfRwvWuNVKlNtF8a4pxgqr5VUsOqH",
+	"hbpE4IVPnEvbpqn+XV3i33/ygvzKDPzzF41obdypVsCvr68nO6ebiJaCw5qbtaVTo7QRgMwse/JBnV37",
+	"+jfy8nRGI7oAY8OFn06OJ1O3UWmQTAua0Cd+KfLV5vmJF8ddPfmFHHxojkMv7rOUJsP3nG419d9Pp3d0",
+	"p/frSscbh5Hm9CUphUWviB2uJqLPApYxFx3meDiF+LY2COw6UsLKsmc2osgcN+d0Q4FTBa3sCFXDPnM9",
+	"RoHFH1W6PBhN4713M7yMbmprdnJ1/NVA3J6sbu7k/kjqMvV0v0xtT2eHyHEAThiRcN3l+ZY0N9HwisSr",
+	"zYzchDe2BITdOjjx67066I/pt4jcZstAlS52kvj0jtk+AFpz/PTzTA3HzEPwG0InrOPWdU3+4Ru/SKOS",
+	"05t7Dkze4dRqbDYb1SrsTTQPlJRXgPtnRNcjGRk+3V+elMPL4ngvtJcsTr8aiD1ksfZHvlAWH6iuQrj7",
+	"lpY/64emUDNDQt4ozkqSwgJKpSuQuB6wBi1TEsel21coi8mT6XTqy2ntbNviu7aCLWFzVePgWV93VRt8",
+	"zUXzbwAAAP//yp+J/10VAAA=",
 }
 
 // GetSwagger returns the content of the embedded swagger specification file
diff --git a/pkg/training/model.go b/pkg/training/model.go
index 2e0ed1a..8f8ab0f 100644
--- a/pkg/training/model.go
+++ b/pkg/training/model.go
@@ -13,5 +13,5 @@ func NewTrainingID() TrainingID {
 type Training struct {
 	ID   TrainingID
 	Name string
-	Days int32
+	Days int8
 }