diff --git a/go.mod b/go.mod
index 4761e29e..ab34c1ed 100644
--- a/go.mod
+++ b/go.mod
@@ -8,7 +8,7 @@ require (
 	github.com/gin-gonic/gin v1.10.0
 	github.com/google/uuid v1.3.0
 	github.com/splitio/gincache v1.0.1
-	github.com/splitio/go-split-commons/v6 v6.1.1-0.20250414224340-9a5c36389db1
+	github.com/splitio/go-split-commons/v6 v6.1.1-0.20250415223836-55f450ca303b
 	github.com/splitio/go-toolkit/v5 v5.4.0
 	github.com/stretchr/testify v1.9.0
 	go.etcd.io/bbolt v1.3.6
diff --git a/go.sum b/go.sum
index be6ef7c9..6d5d9121 100644
--- a/go.sum
+++ b/go.sum
@@ -95,6 +95,8 @@ github.com/splitio/gincache v1.0.1 h1:dLYdANY/BqH4KcUMCe/LluLyV5WtuE/LEdQWRE06IX
 github.com/splitio/gincache v1.0.1/go.mod h1:CcgJDSM9Af75kyBH0724v55URVwMBuSj5x1eCWIOECY=
 github.com/splitio/go-split-commons/v6 v6.1.1-0.20250414224340-9a5c36389db1 h1:le2tNqtYsipMP5PQgJWAtu3x5DbPzquYT36RUeiiVfY=
 github.com/splitio/go-split-commons/v6 v6.1.1-0.20250414224340-9a5c36389db1/go.mod h1:D/XIY/9Hmfk9ivWsRsJVp439kEdmHbzUi3PKzQQDOXY=
+github.com/splitio/go-split-commons/v6 v6.1.1-0.20250415223836-55f450ca303b h1:vAuwe1IFSCJNGnx/BFwnGyleKTQRcCmypV8DIwkA3fM=
+github.com/splitio/go-split-commons/v6 v6.1.1-0.20250415223836-55f450ca303b/go.mod h1:D/XIY/9Hmfk9ivWsRsJVp439kEdmHbzUi3PKzQQDOXY=
 github.com/splitio/go-toolkit/v5 v5.4.0 h1:g5WFpRhQomnXCmvfsNOWV4s5AuUrWIZ+amM68G8NBKM=
 github.com/splitio/go-toolkit/v5 v5.4.0/go.mod h1:xYhUvV1gga9/1029Wbp5pjnR6Cy8nvBpjw99wAbsMko=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
diff --git a/splitio/proxy/controllers/sdk.go b/splitio/proxy/controllers/sdk.go
index 87855863..ddb5c15b 100644
--- a/splitio/proxy/controllers/sdk.go
+++ b/splitio/proxy/controllers/sdk.go
@@ -124,9 +124,8 @@ func (c *SdkServerController) SplitChanges(ctx *gin.Context) {
 	sParam, _ := ctx.GetQuery("s")
 	spec, err := specs.ParseAndValidate(sParam)
 	if err != nil {
-		c.logger.Error(fmt.Sprintf("error parsing spec version: %s.", err))
-		ctx.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": err.Error()})
-		return
+		c.logger.Error(fmt.Sprintf("error parsing spec version: %s. Defaulting to: %s", err, specs.Latest))
+		spec = specs.Latest
 	}
 
 	splits.Splits = c.patchUnsupportedMatchers(splits.Splits, spec)
diff --git a/splitio/proxy/controllers/sdk_test.go b/splitio/proxy/controllers/sdk_test.go
index a4b96933..950ec57b 100644
--- a/splitio/proxy/controllers/sdk_test.go
+++ b/splitio/proxy/controllers/sdk_test.go
@@ -14,7 +14,6 @@ import (
 	"github.com/splitio/go-split-commons/v6/engine/grammar"
 	"github.com/splitio/go-split-commons/v6/engine/grammar/matchers"
 	"github.com/splitio/go-split-commons/v6/service"
-	"github.com/splitio/go-split-commons/v6/service/api/specs"
 	cmnStorage "github.com/splitio/go-split-commons/v6/storage"
 	"github.com/splitio/go-toolkit/v5/logging"
 	"github.com/stretchr/testify/assert"
@@ -440,7 +439,7 @@ func TestSplitChangesNewMatcherNewSpec(t *testing.T) {
 	ctx.Request.Header.Set("SplitSDKMachineIp", "1.2.3.4")
 	ctx.Request.Header.Set("SplitSDKMachineName", "ip-1-2-3-4")
 	q := ctx.Request.URL.Query()
-	q.Add("s", specs.FLAG_V1_1)
+	q.Add("s", "1.1")
 	ctx.Request.URL.RawQuery = q.Encode()
 	router.ServeHTTP(resp, ctx.Request)