diff --git a/CHANGES b/CHANGES
index f0f6a0b33c..df056b1c0c 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,9 @@
                                                          -*- coding: utf-8 -*-
 Changes with Apache 2.5.0
 
+  *) mod_proxy: Fix ProxySourceAddress binding failure with AH00938.
+     PR 56687.  [Arne de Bruijn <apache arbruijn.dds.nl>
+
   *) mod_proxy: don't recyle backend announced "Connection: close" connections
      to avoid reusing it should the close be effective after some new request
      is ready to be sent.  [Yann Ylavic]
diff --git a/modules/proxy/proxy_util.c b/modules/proxy/proxy_util.c
index 1aebd2467a..4f5db685e8 100644
--- a/modules/proxy/proxy_util.c
+++ b/modules/proxy/proxy_util.c
@@ -2148,7 +2148,14 @@ PROXY_DECLARE(int) ap_proxy_connect_to_backend(apr_socket_t **newsock,
                       proxy_function, backend_addr->family, backend_name);
 
         if (conf->source_address) {
-            rv = apr_socket_bind(*newsock, conf->source_address);
+            apr_sockaddr_t *local_addr;
+            /* Make a copy since apr_socket_bind() could change
+             * conf->source_address, which we don't want.
+             */
+            local_addr = apr_pmemdup(r->pool, conf->source_address,
+                                     sizeof(apr_sockaddr_t));
+            local_addr->pool = r->pool;
+            rv = apr_socket_bind(*newsock, local_addr);
             if (rv != APR_SUCCESS) {
                 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(00938)
                               "%s: failed to bind socket to local address",