diff --git a/src/honeysql/format.cljc b/src/honeysql/format.cljc
index c0974b3..e7e323e 100644
--- a/src/honeysql/format.cljc
+++ b/src/honeysql/format.cljc
@@ -183,10 +183,10 @@
 
 (def default-clause-priorities
   "Determines the order that clauses will be placed within generated SQL"
-  {:union 20
-   :union-all 25
-   :with 30
-   :with-recursive 40
+  {:with 20
+   :with-recursive 30
+   :union 40
+   :union-all 45
    :select 50
    :insert-into 60
    :update 70
diff --git a/test/honeysql/format_test.cljc b/test/honeysql/format_test.cljc
index 3e6faf7..acc9cb3 100644
--- a/test/honeysql/format_test.cljc
+++ b/test/honeysql/format_test.cljc
@@ -121,3 +121,18 @@
            (format {:select [:foo]
                     :from [:bar]
                     :where [:= [:mod :col1 4] [:+ :col2 4]]})))))
+
+(deftest union-with-cte
+  (is (= (format {:union [{:select [:foo] :from [:bar1]}
+                          {:select [:foo] :from [:bar2]}]
+                  :with [[[:bar {:columns [:spam :eggs]}]
+                          {:values [[1 2] [3 4] [5 6]]}]]})
+         ["WITH bar (spam, eggs) AS (VALUES (?, ?), (?, ?), (?, ?)) SELECT foo FROM bar1 UNION SELECT foo FROM bar2" 1 2 3 4 5 6])))
+
+
+(deftest union-all-with-cte
+  (is (= (format {:union-all [{:select [:foo] :from [:bar1]}
+                              {:select [:foo] :from [:bar2]}]
+                  :with [[[:bar {:columns [:spam :eggs]}]
+                          {:values [[1 2] [3 4] [5 6]]}]]})
+         ["WITH bar (spam, eggs) AS (VALUES (?, ?), (?, ?), (?, ?)) SELECT foo FROM bar1 UNION ALL SELECT foo FROM bar2" 1 2 3 4 5 6])))