diff --git a/src/solidlsp/language_servers/rust_analyzer.py b/src/solidlsp/language_servers/rust_analyzer.py
index f07483d7..e332c2e6 100644
--- a/src/solidlsp/language_servers/rust_analyzer.py
+++ b/src/solidlsp/language_servers/rust_analyzer.py
@@ -406,7 +406,7 @@ class RustAnalyzer(SolidLanguageServer):
                         "overrideCommand": None,
                         "useRustcWrapper": True,
                     },
-                    "cfgs": {},
+                    "cfgs": [],
                     "extraArgs": [],
                     "extraEnv": {},
                     "features": [],