diff --git a/Cargo.lock b/Cargo.lock
index 109b947..2f74315 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -120,12 +120,6 @@ version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
 
-[[package]]
-name = "base64"
-version = "0.21.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d297deb1925b89f2ccc13d7635fa0714f12c87adce1c75356b39ca9b7178567"
-
 [[package]]
 name = "bumpalo"
 version = "3.14.0"
@@ -402,16 +396,6 @@ version = "1.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
-[[package]]
-name = "pem"
-version = "3.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b8fcc794035347fb64beda2d3b462595dd2753e3f268d89c5aae77e8cf2c310"
-dependencies = [
- "base64 0.21.7",
- "serde",
-]
-
 [[package]]
 name = "percent-encoding"
 version = "2.3.1"
@@ -460,7 +444,6 @@ version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "48406db8ac1f3cbc7dcdb56ec355343817958a356ff430259bb07baf7607e1e1"
 dependencies = [
- "pem",
  "ring 0.17.7",
  "time",
  "yasna",
@@ -507,7 +490,7 @@ version = "0.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "35edb675feee39aec9c99fa5ff985081995a06d594114ae14cbe797ad7b7a6d7"
 dependencies = [
- "base64 0.13.1",
+ "base64",
  "log",
  "ring 0.16.20",
  "sct",
diff --git a/Cargo.toml b/Cargo.toml
index ed02069..ea7bfc8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,7 @@ log = "0.4"
 mime_guess = "2.0"
 once_cell = "1.19"
 percent-encoding = "2.3"
-rcgen = { version = "0.12.1" }
+rcgen = { version = "0.12.1", default-features = false, features = ["ring"] }
 rustls = "0.22.2"
 tokio-rustls = "0.25.0"
 tokio = { version = "1.35", features = ["fs", "io-util", "net", "rt-multi-thread", "sync"] }