diff --git a/CHANGELOG.md b/CHANGELOG.md
index a7a38e9..abbd958 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,9 @@ Possible log types:
 
 ### Unreleased
 
+- [added] Support for schema 16-draft
+- [changed] Fail validation on usage of wrong versioning scheme (i.e. `.api` vs `.api_compatibility`)
+
 ### v0.2.0 (2024-12-29)
 
 - [added] Support for schema v15
diff --git a/spaceapi_validator.go b/spaceapi_validator.go
index a0ec6e0..06ca755 100644
--- a/spaceapi_validator.go
+++ b/spaceapi_validator.go
@@ -53,30 +53,30 @@ func Validate(document string) (ValidationResult, error) {
 		return myResult, err
 	}
 
-	versionList := getVersionList(suppliedVersion)
+	versionList, invalidVersions := getVersionList(suppliedVersion)
+
+	for _, version := range invalidVersions {
+		// Version not found. Thus, we cannot validate. Show an
+		// error for the declared "api_compatibilty" and continue.
+		myResult.Valid = false
+		invalidVersionErrors := []ResultError{
+			{
+				"api_compatibility",
+				"(root).api_compatibility",
+				fmt.Sprintf("Endpoint declares compatibility with schema version %s, which isn't supported", version),
+			},
+		}
+		myResult.Schemas = append(myResult.Schemas, VersionValidationResult{
+			version,
+			false,
+			invalidVersionErrors,
+		})
+		myResult.Errors = append(myResult.Errors, invalidVersionErrors...)
+	}
 
 	for _, version := range versionList {
-		schemaString, found := SpaceAPISchemas[version]
-		if !found {
-			// Version not found. Thus, we cannot validate. Show an
-			// error for the declared "api_compatibilty" and continue.
-			myResult.Valid = false
-			invalidVersionErrors := []ResultError{
-				{
-					"api_compatibility",
-					"(root).api_compatibility",
-					fmt.Sprintf("Endpoint declares compatibility with schema version %s, which isn't supported", version),
-				},
-			}
-			myResult.Schemas = append(myResult.Schemas, VersionValidationResult{
-				version,
-				false,
-				invalidVersionErrors,
-			})
-			myResult.Errors = append(myResult.Errors, invalidVersionErrors...)
-			continue
-		}
-		var schema = gojsonschema.NewStringLoader(schemaString)
+		schemaVersion := SpaceAPISchemas[version]
+		var schema = gojsonschema.NewStringLoader(schemaVersion)
 		result, err := gojsonschema.Validate(schema, documentLoader)
 		if err != nil {
 			myResult.Valid = false
@@ -108,15 +108,27 @@ func Validate(document string) (ValidationResult, error) {
 	return myResult, err
 }
 
-func getVersionList(suppliedVersion spaceAPIVersion) []string {
-	versionList := suppliedVersion.APICompatibility
-	oldVersion := strings.Replace(fmt.Sprintf("%v", suppliedVersion.API), "0.", "", 1)
-	if oldVersion != "<nil>" {
-		versionList = append(versionList, oldVersion)
+func getVersionList(suppliedVersion spaceAPIVersion) ([]string, []string) {
+	var versionList = []string{}
+	var invalidVersions = []string{}
+	for _, v14version := range suppliedVersion.APICompatibility {
+		if schema, found := SpaceApiVersioning[v14version]; found && schema == V14 {
+			versionList = append(versionList, v14version)
+		} else {
+			invalidVersions = append(invalidVersions, v14version)
+		}
+	}
+	v12version := strings.Replace(fmt.Sprintf("%v", suppliedVersion.API), "0.", "", 1)
+	if v12version != "<nil>" {
+		if schema, found := SpaceApiVersioning[v12version]; found && schema == V12 {
+			versionList = append(versionList, v12version)
+		} else {
+			invalidVersions = append(invalidVersions, v12version)
+		}
 	}
 
-	if len(versionList) == 0 {
-		versionList = []string{"14"}
+	if len(versionList) == 0 && len(invalidVersions) == 0 {
+		versionList = []string{"15"}
 	}
-	return versionList
+	return versionList, invalidVersions
 }
diff --git a/spaceapi_validator_test.go b/spaceapi_validator_test.go
index edb9953..66dd68d 100644
--- a/spaceapi_validator_test.go
+++ b/spaceapi_validator_test.go
@@ -79,6 +79,7 @@ var missingIssueReportChannel13 = `{
   }
 }`
 var noVersion = `{ "data": "asd" }`
+var wrongVersionUsage = `{ "api": "14", "api_compatibility": [ "13", "0.13" ], "space": "example", "url": "https://example.com", "logo": "https://example.com/logo.png", "location": { "lon": 42, "lat": 23 }, "state": { "open": true }, "contact": {} }`
 
 func TestValidate(t *testing.T) {
 	invalidResult, _ := Validate(invalid13)
@@ -150,9 +151,9 @@ func TestValidate(t *testing.T) {
 		t.Error("Expected validation to be false, got", invalidResult.Valid)
 	}
 	invalidErrors = invalidResult.Errors
-	if len(invalidErrors) != 6 {
+	if len(invalidErrors) != 5 {
 		t.Logf("%v", invalidResult)
-		t.Error("Schema should have got 6 errors, got", len(invalidErrors))
+		t.Error("Schema should have got 5 errors, got", len(invalidErrors))
 	}
 
 	validResult, err := Validate("")
@@ -187,4 +188,38 @@ func TestValidate(t *testing.T) {
 	if !strings.Contains(invalidErrors[0].Description, "Endpoint declares compatibility with schema version 142, which isn't supported") {
 		t.Error("Did not find expected 'unknown schema version' error:", invalidErrors[0].Description)
 	}
+
+	invalidResult, err = Validate(wrongVersionUsage)
+	if err != nil {
+		t.Error("validation error shouldn't show up on valid json")
+	} else if invalidResult.Valid == true {
+		t.Error("Expected validation to be false, got true")
+	}
+	invalidErrors = invalidResult.Errors
+	if len(invalidErrors) != 3 {
+		t.Logf("%v", invalidResult)
+		t.Error("Schema should have got 3 errors, got", len(invalidErrors))
+	}
+	if !strings.Contains(invalidErrors[0].Description, "Endpoint declares compatibility with schema version 13, which isn't supported") {
+		t.Error("Did not find expected 'unknown schema version' error:", invalidErrors[0].Description)
+	}
+	if !strings.Contains(invalidErrors[1].Description, "Endpoint declares compatibility with schema version 0.13, which isn't supported") {
+		t.Error("Did not find expected 'unknown schema version' error:", invalidErrors[1].Description)
+	}
+	if !strings.Contains(invalidErrors[2].Description, "Endpoint declares compatibility with schema version 14, which isn't supported") {
+		t.Error("Did not find expected 'unknown schema version' error:", invalidErrors[2].Description)
+	}
+}
+
+func TestSchemaVersioningMatch(t *testing.T) {
+	for v, _ := range SpaceAPISchemas {
+		if _, found := SpaceApiVersioning[v]; !found {
+			t.Error("Version", v, "from schemas.SpaceAPISchemas missing in versioning.SpaceApiVersioning")
+		}
+	}
+	for v, _ := range SpaceApiVersioning {
+		if _, found := SpaceAPISchemas[v]; !found {
+			t.Error("Version", v, "from versioning.SpaceApiVersioning missing in schemas.SpaceAPISchemas")
+		}
+	}
 }
diff --git a/versioning.go b/versioning.go
new file mode 100644
index 0000000..04ac3c4
--- /dev/null
+++ b/versioning.go
@@ -0,0 +1,18 @@
+package spaceapivalidator
+
+type VersionSchema int
+
+const (
+	// versioning scheme introduced in v0.12: ".api" key
+	V12 VersionSchema = iota
+	// versioning scheme introduced in v14: ".api_compatibility" list
+	V14
+)
+
+var SpaceApiVersioning = map[string]VersionSchema{
+	"12": V12,
+	"13": V12,
+	"14": V14,
+	"15": V14,
+	"16": V14,
+}