diff --git a/crates/languages/src/json.rs b/crates/languages/src/json.rs
index cec63874af65823be1d65d786aa9ab59c4eca2f5..f430a377b32902f4f1ba86569164c540b910a75c 100644
--- a/crates/languages/src/json.rs
+++ b/crates/languages/src/json.rs
@@ -166,11 +166,9 @@ impl LspAdapter for JsonLspAdapter {
             .await;
 
         if should_install_language_server {
-            // TODO: the postinstall fails on Windows
             self.node
                 .npm_install_packages(&container_dir, &[(package_name, latest_version.as_str())])
-                .await
-                .log_err();
+                .await?;
         }
 
         Ok(LanguageServerBinary {