diff --git a/src/adcp/media_buy_actions.py b/src/adcp/media_buy_actions.py
index 79ff85338..c04c87e9e 100644
--- a/src/adcp/media_buy_actions.py
+++ b/src/adcp/media_buy_actions.py
@@ -1305,7 +1305,8 @@ def _supports_change_term_id(version: str) -> bool:
     beta = int(match.group(3)) if match.group(3) is not None else None
     if (major, minor) < (3, 2):
         return False
-    return beta is None or beta >= 9
+    # change_term_id landed in 3.2.0-beta.9; later lines carry it in every prerelease.
+    return (major, minor) > (3, 2) or beta is None or beta >= 9
 
 
 def _supports_action_task(version: str) -> bool:
diff --git a/tests/test_media_buy_actions.py b/tests/test_media_buy_actions.py
index c826e3439..26b6e6b17 100644
--- a/tests/test_media_buy_actions.py
+++ b/tests/test_media_buy_actions.py
@@ -664,6 +664,17 @@ def test_resolved_condition_allows_seller_managed_standard_async_action() -> Non
                 "change_term_id": "right_increase",
             },
         ),
+        (
+            # The 3.2 beta.9 floor does not apply to 3.3 prereleases.
+            "3.3.0-beta.1",
+            {
+                "action": "increase_budget",
+                "mode": "seller_managed",
+                "task": "control_media_buy",
+                "sla": {"response_max": "PT30M"},
+                "change_term_id": "right_increase",
+            },
+        ),
     ],
 )
 def test_projection_version_matrix(version: str, expected: dict[str, Any]) -> None: