diff --git a/CHANGES b/CHANGES
index e27f5438..d0d3228c 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+6.0.1 (Sep 12, 2024)
+- Updated split version filter to support 1.2.
+- Fixed healcheck monitor for cases with no segments.
+
 6.0.0 (May 14, 2024)
 - BREAKING CHANGE:
     - Changed FetchOptions and Fetch API.
diff --git a/engine/grammar/matchers/matchers.go b/engine/grammar/matchers/matchers.go
index 92ee972a..d8ca62c4 100644
--- a/engine/grammar/matchers/matchers.go
+++ b/engine/grammar/matchers/matchers.go
@@ -62,6 +62,9 @@ const (
 	MatcherTypeBetweenSemver = "BETWEEN_SEMVER"
 	// MatcherTypeInListSemver string value
 	MatcherTypeInListSemver = "IN_LIST_SEMVER"
+
+	// MatcherInLargeSegment string value
+	MatcherInLargeSegment = "IN_LARGE_SEGMENT"
 )
 
 // MatcherInterface should be implemented by all matchers
diff --git a/service/api/specs/specversion.go b/service/api/specs/specversion.go
index 95ba6c8c..78fafcee 100644
--- a/service/api/specs/specversion.go
+++ b/service/api/specs/specversion.go
@@ -1,14 +1,35 @@
 package specs
 
+import "fmt"
+
 const (
 	FLAG_V1_0 = "1.0"
 	FLAG_V1_1 = "1.1"
+	FLAG_V1_2 = "1.2"
 )
 
 // Match returns the spec version if it is valid, otherwise it returns nil
-func Match(specVersion string) *string {
-	if specVersion == FLAG_V1_0 || specVersion == FLAG_V1_1 {
-		return &specVersion
+func Match(version string) *string {
+	switch version {
+	case FLAG_V1_0:
+		return &version
+	case FLAG_V1_1:
+		return &version
+	case FLAG_V1_2:
+		return &version
 	}
 	return nil
 }
+
+func ParseAndValidate(spec string) (string, error) {
+	if len(spec) == 0 {
+		// return default flag spec
+		return FLAG_V1_0, nil
+	}
+
+	if Match(spec) == nil {
+		return spec, fmt.Errorf("unsupported flag spec: %s", spec)
+	}
+
+	return spec, nil
+}
diff --git a/service/api/specs/specversion_test.go b/service/api/specs/specversion_test.go
index 594fbbfe..58865c7a 100644
--- a/service/api/specs/specversion_test.go
+++ b/service/api/specs/specversion_test.go
@@ -14,6 +14,11 @@ func TestMatch(t *testing.T) {
 	}
 
 	specVersion = "1.2"
+	if Match(specVersion) == nil {
+		t.Error("Expected 1.2")
+	}
+
+	specVersion = "1.3"
 	if Match(specVersion) != nil {
 		t.Error("Expected nil")
 	}
diff --git a/service/api/specs/splitversionfilter.go b/service/api/specs/splitversionfilter.go
index aaea9b84..4aadb78c 100644
--- a/service/api/specs/splitversionfilter.go
+++ b/service/api/specs/splitversionfilter.go
@@ -1,29 +1,45 @@
 package specs
 
-import "github.com/splitio/go-split-commons/v6/engine/grammar/matchers"
+import (
+	"github.com/splitio/go-split-commons/v6/engine/grammar/matchers"
+)
 
 type SplitVersionFilter struct {
-	excluded map[mkey]struct{}
+	v1_0 map[string]bool
+	v1_1 map[string]bool
 }
 
-type mkey struct {
-	api     string
-	matcher string
+func NewSplitVersionFilter() SplitVersionFilter {
+	v1_1 := map[string]bool{matchers.MatcherInLargeSegment: true}
+	v1_0 := mergeMaps(map[string]bool{
+		matchers.MatcherEqualToSemver:                  true,
+		matchers.MatcherTypeLessThanOrEqualToSemver:    true,
+		matchers.MatcherTypeGreaterThanOrEqualToSemver: true,
+		matchers.MatcherTypeBetweenSemver:              true,
+		matchers.MatcherTypeInListSemver:               true,
+	}, v1_1)
+
+	return SplitVersionFilter{
+		v1_0: v1_0,
+		v1_1: v1_1,
+	}
 }
 
-func NewSplitVersionFilter() SplitVersionFilter {
-	matchersToExclude := map[mkey]struct{}{
-		{FLAG_V1_0, matchers.MatcherEqualToSemver}:                  {},
-		{FLAG_V1_0, matchers.MatcherTypeLessThanOrEqualToSemver}:    {},
-		{FLAG_V1_0, matchers.MatcherTypeGreaterThanOrEqualToSemver}: {},
-		{FLAG_V1_0, matchers.MatcherTypeBetweenSemver}:              {},
-		{FLAG_V1_0, matchers.MatcherTypeInListSemver}:               {},
+func (f *SplitVersionFilter) ShouldFilter(matcher string, apiVersion string) bool {
+	switch apiVersion {
+	case FLAG_V1_1:
+		return f.v1_1[matcher]
+	case FLAG_V1_0:
+		return f.v1_0[matcher]
 	}
 
-	return SplitVersionFilter{excluded: matchersToExclude}
+	return false
 }
 
-func (s *SplitVersionFilter) ShouldFilter(matcher string, apiVersion string) bool {
-	_, ok := s.excluded[mkey{apiVersion, matcher}]
-	return ok
+func mergeMaps(versionMap map[string]bool, toMergeMap map[string]bool) map[string]bool {
+	for key, value := range toMergeMap {
+		versionMap[key] = value
+	}
+
+	return versionMap
 }
diff --git a/service/api/specs/splitversionfilter_test.go b/service/api/specs/splitversionfilter_test.go
index 8d076783..1f0f358d 100644
--- a/service/api/specs/splitversionfilter_test.go
+++ b/service/api/specs/splitversionfilter_test.go
@@ -6,7 +6,29 @@ import (
 	"github.com/splitio/go-split-commons/v6/engine/grammar/matchers"
 )
 
-func Test_splitVersionFilter(t *testing.T) {
+func TestParseAndValidate(t *testing.T) {
+	res, err := ParseAndValidate("")
+	if err != nil || res != FLAG_V1_0 {
+		t.Error("It should be 1.1")
+	}
+
+	res, err = ParseAndValidate("1.1")
+	if err != nil || res != FLAG_V1_1 {
+		t.Error("It should be 1.1")
+	}
+
+	res, err = ParseAndValidate("1.2")
+	if err != nil || res != FLAG_V1_2 {
+		t.Error("It should be 1.2")
+	}
+
+	res, err = ParseAndValidate("2.3")
+	if err == nil || res != "2.3" {
+		t.Error("Should be a unsupported version")
+	}
+}
+
+func TestsplitVersionFilter(t *testing.T) {
 	filter := NewSplitVersionFilter()
 	shouldFilter := filter.ShouldFilter(matchers.MatcherTypeBetweenSemver, FLAG_V1_0)
 	if !shouldFilter {
@@ -22,4 +44,24 @@ func Test_splitVersionFilter(t *testing.T) {
 	if shouldFilter {
 		t.Error("It should not filtered")
 	}
+
+	shouldFilter = filter.ShouldFilter(matchers.MatcherInLargeSegment, FLAG_V1_0)
+	if !shouldFilter {
+		t.Error("It should filtered")
+	}
+
+	shouldFilter = filter.ShouldFilter(matchers.MatcherInLargeSegment, FLAG_V1_1)
+	if !shouldFilter {
+		t.Error("It should filtered")
+	}
+
+	shouldFilter = filter.ShouldFilter(matchers.MatcherInLargeSegment, FLAG_V1_2)
+	if shouldFilter {
+		t.Error("It should not filtered")
+	}
+
+	shouldFilter = filter.ShouldFilter(matchers.MatcherInLargeSegment, "4.3")
+	if shouldFilter {
+		t.Error("It should not filtered")
+	}
 }