diff --git a/bun.lock b/bun.lock
index 32412cf..b2a559c 100644
--- a/bun.lock
+++ b/bun.lock
@@ -6,7 +6,7 @@
       "name": "@effect-fc/monorepo",
       "devDependencies": {
         "@biomejs/biome": "^2.3.11",
-        "@effect/language-service": "^0.75.0",
+        "@effect/language-service": "^0.78.0",
         "@types/bun": "^1.3.6",
         "npm-check-updates": "^19.3.1",
         "npm-sort": "^0.0.4",
@@ -116,7 +116,7 @@
 
     "@effect-fc/example": ["@effect-fc/example@workspace:packages/example"],
 
-    "@effect/language-service": ["@effect/language-service@0.75.0", "", { "bin": { "effect-language-service": "cli.js" } }, "sha512-DxRN8+b5IEQ/x8hukpV39kJe7fs6er7LDWp1PvKjOxPkN5UJ8VJovUVzoHtOX6XWzMmJBRCN9/j0s8jujXTduw=="],
+    "@effect/language-service": ["@effect/language-service@0.78.0", "", { "bin": { "effect-language-service": "cli.js" } }, "sha512-dEYMhvhKFhikXpXjOlcByRKOU34xFeZbZcOuVTeWTQmjmZ/ZF4K3z0Ku6vL4cWKC8RRIB5di+ix18Y4f9ey5Dg=="],
 
     "@effect/platform": ["@effect/platform@0.94.2", "", { "dependencies": { "find-my-way-ts": "^0.1.6", "msgpackr": "^1.11.4", "multipasta": "^0.2.7" }, "peerDependencies": { "effect": "^3.19.15" } }, "sha512-85vdwpnK4oH/rJ3EuX/Gi2Hkt+K4HvXWr9bxCuqvty9hxyEcRxkJcqTesYrcVoQB6aULb1Za2B0MKoTbvffB3Q=="],
 
diff --git a/package.json b/package.json
index f793a46..1284987 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   },
   "devDependencies": {
     "@biomejs/biome": "^2.3.11",
-    "@effect/language-service": "^0.75.0",
+    "@effect/language-service": "^0.78.0",
     "@types/bun": "^1.3.6",
     "npm-check-updates": "^19.3.1",
     "npm-sort": "^0.0.4",