diff --git a/CHANGELOG.md b/CHANGELOG.md
index e193d01f..6e3fcb0a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changes
 
+* 2.4.next in progress
+  * Fix [#441](https://github.com/seancorfield/honeysql/issues/441) by adding `:replace-into` to in-flight clause order (as well as registering it for the `:mysql` dialect).
+
 * 2.4.947 -- 2022-11-05
   * Fix [#439](https://github.com/seancorfield/honeysql/issues/439) by rewriting how DDL options are processed; also fixes [#386](https://github.com/seancorfield/honeysql/issues/386) and [#437](https://github.com/seancorfield/honeysql/issues/437); **Whilst this is intended to be purely a bug fix, it has the potential to be a breaking change -- hence the version jump to 2.4!**
   * Fix [#438](https://github.com/seancorfield/honeysql/issues/438) by
diff --git a/src/honey/sql.cljc b/src/honey/sql.cljc
index f91589f7..b8e51f00 100644
--- a/src/honey/sql.cljc
+++ b/src/honey/sql.cljc
@@ -106,8 +106,12 @@
                :mysql     {:quote #(strop \` % \`)
                            :clause-order-fn
                            #(do
+                              ;; side-effect: updates global clauses...
                               (register-clause! :replace-into :insert-into :insert-into)
-                              (add-clause-before % :set :where))}
+                              (-> %
+                                  (add-clause-before :set :where)
+                                  ;; ...but not in-flight clauses:
+                                  (add-clause-before :replace-into :insert-into)))}
                :oracle    {:quote #(strop \" % \") :as false}})))
 
 ; should become defonce