diff --git a/openapi/CHANGELOG.md b/openapi/CHANGELOG.md
index 9000e6b4244..951776251a6 100644
--- a/openapi/CHANGELOG.md
+++ b/openapi/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 <!-- TODO(a.garipov): Reformat in accordance with the KeepAChangelog spec. -->
 
+## v0.107.76: API changes
+
+### Documentation fix for the `reason` query parameter in 'GET /control/querylog'
+
+- The `reason` query parameter documentation has been updated to reflect that this parameter is an array.
+
 ## v0.107.75: API changes
 
 ### New `reason` query parameter in 'GET /control/querylog'
diff --git a/openapi/openapi.yaml b/openapi/openapi.yaml
index 457d0cb1753..c214be1cdd9 100644
--- a/openapi/openapi.yaml
+++ b/openapi/openapi.yaml
@@ -243,11 +243,14 @@
       - 'name': 'reason'
         'in': 'query'
         'description': >
-          Filter by response filtering reason
+          Filter by response filtering reason.  Multiple reasons can be
+          provided.
 
           NOTE: This parameter cannot be used with 'response_status' parameter.
         'schema':
-          '$ref': '#/components/schemas/FilteringReason'
+          'type': 'array'
+          'items':
+            '$ref': '#/components/schemas/FilteringReason'
       'responses':
         '200':
           'description': 'OK.'