diff --git a/changelog.d/910.fix.md b/changelog.d/910.fix.md
new file mode 100644
index 0000000000..ba3acc0d6d
--- /dev/null
+++ b/changelog.d/910.fix.md
@@ -0,0 +1 @@
+`server` option for `dns_lookup` now properly replaces default server settings
diff --git a/src/stdlib/dns_lookup.rs b/src/stdlib/dns_lookup.rs
index 6836a063e5..d3754c18da 100644
--- a/src/stdlib/dns_lookup.rs
+++ b/src/stdlib/dns_lookup.rs
@@ -219,6 +219,7 @@ mod non_wasm {
             .map(|s| s.clone().try_array())
             .transpose()?
         {
+            conf.servers.clear();
             for server in servers {
                 let mut server = server.try_bytes_utf8_lossy()?;
                 if !server.contains(':') {