diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e76e11..1f410ee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 Only accretive/fixative changes will be made from now on.
 
+* 1.3.next in progress
+  * Address [#245](https://github.com/seancorfield/next-jdbc/issues/245) by not `locking` the `Connection` when `*nested-tx*` is bound to `:ignore` -- improving `clojure.java.jdbc` compatibility.
+
 * 1.3.862 -- 2023-03-13
   * Fix [#243](https://github.com/seancorfield/next-jdbc/issues/243) by ensuring URI properties become keywords.
   * Fix [#242](https://github.com/seancorfield/next-jdbc/issues/242) by making the logging wrapper aware of the default options wrapper.
diff --git a/src/next/jdbc/transaction.clj b/src/next/jdbc/transaction.clj
index 84789ac..c927222 100644
--- a/src/next/jdbc/transaction.clj
+++ b/src/next/jdbc/transaction.clj
@@ -115,7 +115,12 @@
 (extend-protocol p/Transactable
   java.sql.Connection
   (-transact [this body-fn opts]
-    (cond (or (not *active-tx*) (= :allow *nested-tx*))
+    (cond
+      (and (not *active-tx*) (= :ignore *nested-tx*))
+      ;; #245 do not lock when in c.j.j compatibility mode:
+      (binding [*active-tx* true]
+        (transact* this body-fn opts))
+      (or (not *active-tx*) (= :allow *nested-tx*))
       (locking this
         (binding [*active-tx* true]
           (transact* this body-fn opts)))