diff --git a/crates/languages/src/typescript.rs b/crates/languages/src/typescript.rs
index 13ff23f26d..7a538dba13 100644
--- a/crates/languages/src/typescript.rs
+++ b/crates/languages/src/typescript.rs
@@ -286,6 +286,11 @@ impl LspAdapter for EsLintLspAdapter {
             .cloned()
             .unwrap_or_else(|| json!({}));
 
+        let rules_customizations = eslint_user_settings
+            .get("rulesCustomizations")
+            .cloned()
+            .unwrap_or_else(|| json!([]));
+
         let node_path = eslint_user_settings.get("nodePath").unwrap_or(&Value::Null);
         let use_flat_config = Self::FLAT_CONFIG_FILE_NAMES
             .iter()
@@ -294,7 +299,7 @@ impl LspAdapter for EsLintLspAdapter {
         Ok(json!({
             "": {
                 "validate": "on",
-                "rulesCustomizations": [],
+                "rulesCustomizations": rules_customizations,
                 "run": "onType",
                 "nodePath": node_path,
                 "workingDirectory": {"mode": "auto"},
diff --git a/docs/src/languages/javascript.md b/docs/src/languages/javascript.md
index 9ddd277640..fc57833565 100644
--- a/docs/src/languages/javascript.md
+++ b/docs/src/languages/javascript.md
@@ -121,3 +121,22 @@ For example, here's how to set `problems.shortenToSingleLine`:
   }
 }
 ```
+
+#### Configure ESLint's `rulesCustomizations`:
+
+You can configure ESLint's `rulesCustomizations` setting:
+
+```json
+{
+  "lsp": {
+    "eslint": {
+      "settings": {
+        "rulesCustomizations": [
+          // set all eslint errors/warnings to show as warnings
+          { "rule": "*", "severity": "warn" }
+        ]
+      }
+    }
+  }
+}
+```