diff --git a/.changeset/add-does-not-contain-operator.md b/.changeset/add-does-not-contain-operator.md
new file mode 100644
index 00000000..6ce69a11
--- /dev/null
+++ b/.changeset/add-does-not-contain-operator.md
@@ -0,0 +1,7 @@
+---
+"@transcend-io/privacy-types": patch
+"@transcend-io/sdk": patch
+"@transcend-io/cli": patch
+---
+
+Add `DOES_NOT_CONTAIN` attribute to `ComparisonOperator` for assessment rules, and regenerate `transcend.yml` JSON schema.
diff --git a/packages/cli/schema/transcend-yml-schema-latest.json b/packages/cli/schema/transcend-yml-schema-latest.json
index e6540df9..f443c72c 100644
--- a/packages/cli/schema/transcend-yml-schema-latest.json
+++ b/packages/cli/schema/transcend-yml-schema-latest.json
@@ -42162,7 +42162,8 @@
                                                       "IS_NOT_ONE_OF",
                                                       "CONTAINS",
                                                       "IS_SHOWN",
-                                                      "IS_NOT_SHOWN"
+                                                      "IS_NOT_SHOWN",
+                                                      "DOES_NOT_CONTAIN"
                                                     ]
                                                   }
                                                 }
@@ -42211,7 +42212,8 @@
                                                 "IS_NOT_ONE_OF",
                                                 "CONTAINS",
                                                 "IS_SHOWN",
-                                                "IS_NOT_SHOWN"
+                                                "IS_NOT_SHOWN",
+                                                "DOES_NOT_CONTAIN"
                                               ]
                                             }
                                           }
@@ -42610,7 +42612,8 @@
                                                       "IS_NOT_ONE_OF",
                                                       "CONTAINS",
                                                       "IS_SHOWN",
-                                                      "IS_NOT_SHOWN"
+                                                      "IS_NOT_SHOWN",
+                                                      "DOES_NOT_CONTAIN"
                                                     ]
                                                   }
                                                 }
@@ -42659,7 +42662,8 @@
                                                 "IS_NOT_ONE_OF",
                                                 "CONTAINS",
                                                 "IS_SHOWN",
-                                                "IS_NOT_SHOWN"
+                                                "IS_NOT_SHOWN",
+                                                "DOES_NOT_CONTAIN"
                                               ]
                                             }
                                           }
diff --git a/packages/cli/schema/transcend-yml-schema-v10.json b/packages/cli/schema/transcend-yml-schema-v10.json
index 7e9fe3e6..cc795ed3 100644
--- a/packages/cli/schema/transcend-yml-schema-v10.json
+++ b/packages/cli/schema/transcend-yml-schema-v10.json
@@ -42162,7 +42162,8 @@
                                                       "IS_NOT_ONE_OF",
                                                       "CONTAINS",
                                                       "IS_SHOWN",
-                                                      "IS_NOT_SHOWN"
+                                                      "IS_NOT_SHOWN",
+                                                      "DOES_NOT_CONTAIN"
                                                     ]
                                                   }
                                                 }
@@ -42211,7 +42212,8 @@
                                                 "IS_NOT_ONE_OF",
                                                 "CONTAINS",
                                                 "IS_SHOWN",
-                                                "IS_NOT_SHOWN"
+                                                "IS_NOT_SHOWN",
+                                                "DOES_NOT_CONTAIN"
                                               ]
                                             }
                                           }
@@ -42610,7 +42612,8 @@
                                                       "IS_NOT_ONE_OF",
                                                       "CONTAINS",
                                                       "IS_SHOWN",
-                                                      "IS_NOT_SHOWN"
+                                                      "IS_NOT_SHOWN",
+                                                      "DOES_NOT_CONTAIN"
                                                     ]
                                                   }
                                                 }
@@ -42659,7 +42662,8 @@
                                                 "IS_NOT_ONE_OF",
                                                 "CONTAINS",
                                                 "IS_SHOWN",
-                                                "IS_NOT_SHOWN"
+                                                "IS_NOT_SHOWN",
+                                                "DOES_NOT_CONTAIN"
                                               ]
                                             }
                                           }
diff --git a/packages/privacy-types/src/assessmentForm.ts b/packages/privacy-types/src/assessmentForm.ts
index 55db5d3d..5ed450b4 100644
--- a/packages/privacy-types/src/assessmentForm.ts
+++ b/packages/privacy-types/src/assessmentForm.ts
@@ -163,6 +163,8 @@ export const ComparisonOperator = makeEnum({
   IsShown: 'IS_SHOWN',
   /** is not shown */
   IsNotShown: 'IS_NOT_SHOWN',
+  /** does not contain */
+  DoesNotContain: 'DOES_NOT_CONTAIN',
 });
 
 /**
diff --git a/packages/sdk/src/assessments/parseAssessmentDisplayLogic.ts b/packages/sdk/src/assessments/parseAssessmentDisplayLogic.ts
index 83300169..7223cc6d 100644
--- a/packages/sdk/src/assessments/parseAssessmentDisplayLogic.ts
+++ b/packages/sdk/src/assessments/parseAssessmentDisplayLogic.ts
@@ -15,6 +15,7 @@ export const AssessmentRuleWithOperands = t.type({
     t.literal(ComparisonOperator.IsOneOf),
     t.literal(ComparisonOperator.IsNotOneOf),
     t.literal(ComparisonOperator.Contains),
+    t.literal(ComparisonOperator.DoesNotContain),
   ]),
   comparisonOperands: t.array(t.string),
 });