diff --git a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json
index dacaa2984f24..32eabd2cd76b 100644
--- a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json
+++ b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json
@@ -7504,6 +7504,10 @@
       "description": "Script activity properties.",
       "type": "object",
       "properties": {
+        "scriptBlockExecutionTimeout": {
+          "type": "object",
+          "description": "ScriptBlock execution timeout. Type: string (or Expression with resultType string), pattern: ((\\d+)\\.)?(\\d\\d):(60|([0-5][0-9])):(60|([0-5][0-9]))."
+        },
         "scripts": {
           "type": "array",
           "description": "Array of script blocks. Type: array.",