diff --git a/backend/.gitlab-ci.yml b/backend/.gitlab-ci.yml
index c0f3118..088d8fd 100644
--- a/backend/.gitlab-ci.yml
+++ b/backend/.gitlab-ci.yml
@@ -13,7 +13,7 @@ build_backend_muslc:
     stage: build
     image: rust:alpine
     script:
-        - apk add openssl-dev pkgconf musl-dev
+        - apk add pkgconf musl-dev
         - cd backend
         - cargo build --release
         - cp target/release/backend_rust ../server
diff --git a/backend/Cargo.toml b/backend/Cargo.toml
index 64b70bc..d75b806 100644
--- a/backend/Cargo.toml
+++ b/backend/Cargo.toml
@@ -27,7 +27,7 @@ jsonwebtoken = "8.1.1"
 thiserror = "1.0.37"
 chrono = "0.4.22"
 rust-argon2 = "1.0.0"
-lettre = "0.10.1"
+lettre = { version = "0.10.1", features = ["smtp-transport", "hostname", "builder", "rustls-tls"], default-features = false }
 ureq = { version = "2.5.0", features = ["json"] }
 totp-rs = { version = "3.0.1", features = ["qr"] }
 ring = { version = "0.16.20", default-features = false }