diff --git a/docs/variables.md b/docs/variables.md
index 6ad84f8bb25..b86cd2f49a1 100644
--- a/docs/variables.md
+++ b/docs/variables.md
@@ -162,3 +162,5 @@ variable via `resources.inputs.<resourceName>.<variableName>` or
 | `Pipeline` | `spec.tasks[].params[].value` |
 | `Pipeline` | `spec.tasks[].conditions[].params[].value` |
 | `Pipeline` | `spec.results[].value` |
+| `Pipeline` | `spec.tasks[].when[].input` |
+| `Pipeline` | `spec.tasks[].when[].values` |
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