diff --git a/Cargo.toml b/Cargo.toml
index a9432ab63..27e4e1492 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -108,7 +108,7 @@ tokio-tungstenite = "0.20.0"
 
 # system
 dirs = "5"
-fontdb = "0.15.0"                                          # "0.15.0"
+fontdb = "0.15.0"
 memmap2 = "0.9"
 notify = "6"
 path-clean = "1.0.1"
diff --git a/compiler/Cargo.toml b/compiler/Cargo.toml
index e67418e5d..83a153c11 100644
--- a/compiler/Cargo.toml
+++ b/compiler/Cargo.toml
@@ -24,7 +24,7 @@ flate2.workspace = true
 ecow.workspace = true
 instant.workspace = true
 strum.workspace = true
-rayon.workspace = true
+rayon = { workspace = true, optional = true }
 
 serde.workspace = true
 serde_json.workspace = true
@@ -87,7 +87,7 @@ serde.workspace = true
 [features]
 cjk = []
 emoji = []
-lazy-fontdb = []
+lazy-fontdb = ["dep:rayon"]
 system-compile = [
     "dep:dirs",
     "dep:walkdir",