diff --git a/lib/plausible/stats/filters/query_parser.ex b/lib/plausible/stats/filters/query_parser.ex
index 87873a1dd0f4..a0878122bc6d 100644
--- a/lib/plausible/stats/filters/query_parser.ex
+++ b/lib/plausible/stats/filters/query_parser.ex
@@ -79,8 +79,6 @@ defmodule Plausible.Stats.Filters.QueryParser do
   defp parse_operator(["matches_wildcard_not" | _rest]), do: {:ok, :matches_wildcard_not}
   defp parse_operator(["contains" | _rest]), do: {:ok, :contains}
   defp parse_operator(["contains_not" | _rest]), do: {:ok, :contains_not}
-  # :TODO: Remove this once frontend support is gone
-  defp parse_operator(["does_not_contain" | _rest]), do: {:ok, :contains_not}
   defp parse_operator(["not" | _rest]), do: {:ok, :not}
   defp parse_operator(["and" | _rest]), do: {:ok, :and}
   defp parse_operator(["or" | _rest]), do: {:ok, :or}
diff --git a/lib/plausible/stats/json_schema.ex b/lib/plausible/stats/json_schema.ex
index 81297dc76df7..64db0da90cd8 100644
--- a/lib/plausible/stats/json_schema.ex
+++ b/lib/plausible/stats/json_schema.ex
@@ -17,11 +17,11 @@ defmodule Plausible.Stats.JSONSchema do
   @internal_query_schema @raw_public_schema
                          # Add overrides for things allowed in the internal API
                          |> JSONPointer.add!(
-                           "#/definitions/filter_entry/oneOf/0/items/0/oneOf/0/enum/0",
+                           "#/definitions/filter_entry/oneOf/0/items/0/enum/0",
                            "matches_wildcard"
                          )
                          |> JSONPointer.add!(
-                           "#/definitions/filter_entry/oneOf/0/items/0/oneOf/0/enum/0",
+                           "#/definitions/filter_entry/oneOf/0/items/0/enum/0",
                            "matches_wildcard_not"
                          )
                          |> JSONPointer.add!("#/definitions/metric/oneOf/0", %{
diff --git a/priv/json-schemas/query-api-schema.json b/priv/json-schemas/query-api-schema.json
index 61258f88ae25..15f5114884f5 100644
--- a/priv/json-schemas/query-api-schema.json
+++ b/priv/json-schemas/query-api-schema.json
@@ -243,21 +243,12 @@
           "type": "array",
           "items": [
             {
-              "oneOf": [
-                {
-                  "type": "string",
-                  "enum": [
-                    "is_not",
-                    "contains_not",
-                    "matches",
-                    "matches_not"
-                  ]
-                },
-                {
-                  "const": "does_not_contain",
-                  "deprecationMessage": "Legacy support, will be removed next week",
-                  "deprecated": true
-                }
+              "type": "string",
+              "enum": [
+                "is_not",
+                "contains_not",
+                "matches",
+                "matches_not"
               ],
               "description": "filter operation"
             },