diff --git a/docs/changes.xml b/docs/changes.xml
index f4e3f65e..59c55fea 100644
--- a/docs/changes.xml
+++ b/docs/changes.xml
@@ -43,6 +43,12 @@ prefer system crypto policy, instead of hardcoding a default.
 </para>
 </change>
 
+<change type="feature">
+<para>
+compatibility with OpenSSL 3.
+</para>
+</change>
+
 <change type="feature">
 <para>
 compatibility with PHP 8.2.
diff --git a/src/nxt_openssl.c b/src/nxt_openssl.c
index 32904660..55611511 100644
--- a/src/nxt_openssl.c
+++ b/src/nxt_openssl.c
@@ -1777,7 +1777,11 @@ nxt_openssl_copy_error(u_char *p, u_char *end)
     clear = 0;
 
     for ( ;; ) {
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L
+        err = ERR_get_error_all(NULL, NULL, NULL, &data, &flags);
+#else
         err = ERR_get_error_line_data(NULL, NULL, &data, &flags);
+#endif
         if (err == 0) {
             break;
         }