diff --git a/.generated-info b/.generated-info
index 7366d1753f4..cfbdcaf5d37 100644
--- a/.generated-info
+++ b/.generated-info
@@ -1,4 +1,4 @@
 {
-  "spec_repo_commit": "a6f5281",
-  "generated": "2025-08-06 17:44:35.840"
+  "spec_repo_commit": "befda92",
+  "generated": "2025-08-06 19:12:57.307"
 }
diff --git a/.generator/schemas/v2/openapi.yaml b/.generator/schemas/v2/openapi.yaml
index d200d681dfd..6c6262eb253 100644
--- a/.generator/schemas/v2/openapi.yaml
+++ b/.generator/schemas/v2/openapi.yaml
@@ -28224,7 +28224,6 @@ components:
       required:
       - source
       - match_rules
-      - support_rules
       type: object
     ObservabilityPipelineParseGrokProcessorRuleMatchRule:
       description: 'Defines a Grok parsing rule, which extracts structured fields
diff --git a/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineParseGrokProcessorRule.java b/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineParseGrokProcessorRule.java
index 9d42ccaa1f4..b1177e1b191 100644
--- a/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineParseGrokProcessorRule.java
+++ b/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineParseGrokProcessorRule.java
@@ -39,8 +39,7 @@ public class ObservabilityPipelineParseGrokProcessorRule {
   private String source;
 
   public static final String JSON_PROPERTY_SUPPORT_RULES = "support_rules";
-  private List<ObservabilityPipelineParseGrokProcessorRuleSupportRule> supportRules =
-      new ArrayList<>();
+  private List<ObservabilityPipelineParseGrokProcessorRuleSupportRule> supportRules = null;
 
   public ObservabilityPipelineParseGrokProcessorRule() {}
 
@@ -48,12 +47,9 @@ public ObservabilityPipelineParseGrokProcessorRule() {}
   public ObservabilityPipelineParseGrokProcessorRule(
       @JsonProperty(required = true, value = JSON_PROPERTY_MATCH_RULES)
           List<ObservabilityPipelineParseGrokProcessorRuleMatchRule> matchRules,
-      @JsonProperty(required = true, value = JSON_PROPERTY_SOURCE) String source,
-      @JsonProperty(required = true, value = JSON_PROPERTY_SUPPORT_RULES)
-          List<ObservabilityPipelineParseGrokProcessorRuleSupportRule> supportRules) {
+      @JsonProperty(required = true, value = JSON_PROPERTY_SOURCE) String source) {
     this.matchRules = matchRules;
     this.source = source;
-    this.supportRules = supportRules;
   }
 
   public ObservabilityPipelineParseGrokProcessorRule matchRules(
@@ -119,6 +115,9 @@ public ObservabilityPipelineParseGrokProcessorRule supportRules(
 
   public ObservabilityPipelineParseGrokProcessorRule addSupportRulesItem(
       ObservabilityPipelineParseGrokProcessorRuleSupportRule supportRulesItem) {
+    if (this.supportRules == null) {
+      this.supportRules = new ArrayList<>();
+    }
     this.supportRules.add(supportRulesItem);
     this.unparsed |= supportRulesItem.unparsed;
     return this;
@@ -129,8 +128,9 @@ public ObservabilityPipelineParseGrokProcessorRule addSupportRulesItem(
    *
    * @return supportRules
    */
+  @jakarta.annotation.Nullable
   @JsonProperty(JSON_PROPERTY_SUPPORT_RULES)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
   public List<ObservabilityPipelineParseGrokProcessorRuleSupportRule> getSupportRules() {
     return supportRules;
   }