diff --git a/crates/backend/Cargo.toml b/crates/backend/Cargo.toml
index 41e21a62..64480b96 100644
--- a/crates/backend/Cargo.toml
+++ b/crates/backend/Cargo.toml
@@ -15,7 +15,7 @@ independent = true
 [features]
 noop = []
 strict = []
-type-def = ["regex", "semver"]
+type-def = ["semver"]
 
 [dependencies]
 convert_case = "0.6"
@@ -23,10 +23,6 @@ proc-macro2 = "1"
 quote = "1"
 syn = { version = "2", features = ["fold", "full", "extra-traits"] }
 
-[dependencies.regex]
-optional = true
-version = "1"
-
 [dependencies.semver]
 optional = true
 version = "1"