diff --git a/github/github-accessors.go b/github/github-accessors.go
index ea4cfb75da1..94c08a957bd 100644
--- a/github/github-accessors.go
+++ b/github/github-accessors.go
@@ -22054,6 +22054,14 @@ func (r *RulesetRepositoryNamesConditionParameters) GetProtected() bool {
 	return *r.Protected
 }
 
+// GetSource returns the Source field if it's non-nil, zero value otherwise.
+func (r *RulesetRepositoryPropertyTargetParameters) GetSource() string {
+	if r == nil || r.Source == nil {
+		return ""
+	}
+	return *r.Source
+}
+
 // GetBusy returns the Busy field if it's non-nil, zero value otherwise.
 func (r *Runner) GetBusy() bool {
 	if r == nil || r.Busy == nil {
diff --git a/github/github-accessors_test.go b/github/github-accessors_test.go
index acd3febe8f6..0cfe4c10c22 100644
--- a/github/github-accessors_test.go
+++ b/github/github-accessors_test.go
@@ -28247,6 +28247,17 @@ func TestRulesetRepositoryNamesConditionParameters_GetProtected(tt *testing.T) {
 	r.GetProtected()
 }
 
+func TestRulesetRepositoryPropertyTargetParameters_GetSource(tt *testing.T) {
+	tt.Parallel()
+	var zeroValue string
+	r := &RulesetRepositoryPropertyTargetParameters{Source: &zeroValue}
+	r.GetSource()
+	r = &RulesetRepositoryPropertyTargetParameters{}
+	r.GetSource()
+	r = nil
+	r.GetSource()
+}
+
 func TestRunner_GetBusy(tt *testing.T) {
 	tt.Parallel()
 	var zeroValue bool
diff --git a/github/orgs_rules_test.go b/github/orgs_rules_test.go
index ac391dae531..ca6e3f84ce4 100644
--- a/github/orgs_rules_test.go
+++ b/github/orgs_rules_test.go
@@ -454,7 +454,6 @@ func TestOrganizationsService_CreateOrganizationRuleset_RepoProperty(t *testing.
 				"exclude": [
 					{
 						"name": "testExcludeProp",
-						"source": "custom",
 						"property_values": [
 							"false"
 						]
@@ -590,14 +589,13 @@ func TestOrganizationsService_CreateOrganizationRuleset_RepoProperty(t *testing.
 				Include: []RulesetRepositoryPropertyTargetParameters{
 					{
 						Name:   "testIncludeProp",
-						Source: "custom",
+						Source: String("custom"),
 						Values: []string{"true"},
 					},
 				},
 				Exclude: []RulesetRepositoryPropertyTargetParameters{
 					{
 						Name:   "testExcludeProp",
-						Source: "custom",
 						Values: []string{"false"},
 					},
 				},
@@ -692,14 +690,13 @@ func TestOrganizationsService_CreateOrganizationRuleset_RepoProperty(t *testing.
 				Include: []RulesetRepositoryPropertyTargetParameters{
 					{
 						Name:   "testIncludeProp",
-						Source: "custom",
+						Source: String("custom"),
 						Values: []string{"true"},
 					},
 				},
 				Exclude: []RulesetRepositoryPropertyTargetParameters{
 					{
 						Name:   "testExcludeProp",
-						Source: "custom",
 						Values: []string{"false"},
 					},
 				},
@@ -1287,7 +1284,7 @@ func TestOrganizationsService_GetOrganizationRulesetWithRepoPropCondition(t *tes
 				Include: []RulesetRepositoryPropertyTargetParameters{
 					{
 						Name:   "testIncludeProp",
-						Source: "custom",
+						Source: String("custom"),
 						Values: []string{"true"},
 					},
 				},
@@ -1480,7 +1477,7 @@ func TestOrganizationsService_UpdateOrganizationRulesetWithRepoProp(t *testing.T
 				Include: []RulesetRepositoryPropertyTargetParameters{
 					{
 						Name:   "testIncludeProp",
-						Source: "custom",
+						Source: String("custom"),
 						Values: []string{"true"},
 					},
 				},
@@ -1512,7 +1509,7 @@ func TestOrganizationsService_UpdateOrganizationRulesetWithRepoProp(t *testing.T
 				Include: []RulesetRepositoryPropertyTargetParameters{
 					{
 						Name:   "testIncludeProp",
-						Source: "custom",
+						Source: String("custom"),
 						Values: []string{"true"},
 					},
 				},
diff --git a/github/repos_rules.go b/github/repos_rules.go
index 07e8afad0ed..0d5052a4b1e 100644
--- a/github/repos_rules.go
+++ b/github/repos_rules.go
@@ -52,7 +52,7 @@ type RulesetRepositoryIDsConditionParameters struct {
 type RulesetRepositoryPropertyTargetParameters struct {
 	Name   string   `json:"name"`
 	Values []string `json:"property_values"`
-	Source string   `json:"source"`
+	Source *string  `json:"source,omitempty"`
 }
 
 // RulesetRepositoryPropertyConditionParameters represents the conditions object for repository_property.