diff --git a/pageserver/src/http/openapi_spec.yml b/pageserver/src/http/openapi_spec.yml
index 4823710fb5..263f56a935 100644
--- a/pageserver/src/http/openapi_spec.yml
+++ b/pageserver/src/http/openapi_spec.yml
@@ -1444,6 +1444,8 @@ components:
           type: integer
         trace_read_requests:
           type: boolean
+        compress_image_layer:
+          type: boolean
         heatmap_period:
           type: string
     TenantConfigResponse:
diff --git a/test_runner/regress/test_attach_tenant_config.py b/test_runner/regress/test_attach_tenant_config.py
index 3058926b25..db2f50d063 100644
--- a/test_runner/regress/test_attach_tenant_config.py
+++ b/test_runner/regress/test_attach_tenant_config.py
@@ -188,6 +188,7 @@ def test_fully_custom_config(positive_env: NeonEnv):
             "max": 1000,
         },
         "trace_read_requests": True,
+        "compress_image_layer": True,
         "walreceiver_connect_timeout": "13m",
     }