diff --git a/neurostore-openapi.yml b/neurostore-openapi.yml
index 589a9b6..7e5c15e 100644
--- a/neurostore-openapi.yml
+++ b/neurostore-openapi.yml
@@ -1131,6 +1131,20 @@ paths:
               schema:
                 $ref: '#/components/schemas/base-study-list'
       parameters:
+        - name: year_min
+          in: query
+          description: Minimum publication year (inclusive) for study search
+          required: false
+          schema:
+            type: integer
+            example: 2000
+        - name: year_max
+          in: query
+          description: Maximum publication year (inclusive) for study search
+          required: false
+          schema:
+            type: integer
+            example: 2020
         - name: feature_filter
           in: query
           description: >