diff --git a/editors/code/package.json b/editors/code/package.json
index f687eb8d45..12d32cef72 100644
--- a/editors/code/package.json
+++ b/editors/code/package.json
@@ -181,6 +181,9 @@
                 },
                 "rust-analyzer.excludeGlobs": {
                     "type": "array",
+                    "items": {
+                        "type": "string"
+                    },
                     "default": [],
                     "description": "Paths to exclude from analysis"
                 },
@@ -196,6 +199,9 @@
                 },
                 "rust-analyzer.cargo-watch.arguments": {
                     "type": "array",
+                    "items": {
+                        "type": "string"
+                    },
                     "description": "`cargo-watch` arguments. (e.g: `--features=\"shumway,pdf\"` will run as `cargo watch -x \"check --features=\"shumway,pdf\"\"` )",
                     "default": []
                 },
@@ -241,6 +247,7 @@
                 "rust-analyzer.maxInlayHintLength": {
                     "type": "number",
                     "default": 20,
+                    "exclusiveMinimum": 0,
                     "description": "Maximum length for inlay hints"
                 },
                 "rust-analyzer.cargoFeatures.noDefaultFeatures": {
@@ -255,6 +262,9 @@
                 },
                 "rust-analyzer.cargoFeatures.features": {
                     "type": "array",
+                    "items": {
+                        "type": "string"
+                    },
                     "default": [],
                     "description": "List of features to activate"
                 }