diff --git a/Cargo.lock b/Cargo.lock
index 50e263401..5979a2bd5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1506,6 +1506,20 @@ dependencies = [
  "want",
 ]
 
+[[package]]
+name = "hyper-rustls"
+version = "0.24.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec3efd23720e2049821a693cbc7e65ea87c72f1c58ff2f9522ff332b1491e590"
+dependencies = [
+ "futures-util",
+ "http",
+ "hyper",
+ "rustls",
+ "tokio",
+ "tokio-rustls",
+]
+
 [[package]]
 name = "hyper-tls"
 version = "0.5.0"
@@ -1679,7 +1693,7 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 dependencies = [
- "spin",
+ "spin 0.5.2",
 ]
 
 [[package]]
@@ -2558,6 +2572,7 @@ dependencies = [
  "http",
  "http-body",
  "hyper",
+ "hyper-rustls",
  "hyper-tls",
  "ipnet",
  "js-sys",
@@ -2568,17 +2583,21 @@ dependencies = [
  "once_cell",
  "percent-encoding",
  "pin-project-lite",
+ "rustls",
+ "rustls-pemfile",
  "serde",
  "serde_json",
  "serde_urlencoded",
  "system-configuration",
  "tokio",
  "tokio-native-tls",
+ "tokio-rustls",
  "tower-service",
  "url",
  "wasm-bindgen",
  "wasm-bindgen-futures",
  "web-sys",
+ "webpki-roots",
  "winreg",
 ]
 
@@ -2597,6 +2616,20 @@ dependencies = [
  "bytemuck",
 ]
 
+[[package]]
+name = "ring"
+version = "0.17.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "684d5e6e18f669ccebf64a92236bb7db9a34f07be010e3627368182027180866"
+dependencies = [
+ "cc",
+ "getrandom 0.2.11",
+ "libc",
+ "spin 0.9.8",
+ "untrusted",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "rsa"
 version = "0.9.3"
@@ -2636,6 +2669,37 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "rustls"
+version = "0.21.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "629648aced5775d558af50b2b4c7b02983a04b312126d45eeead26e7caa498b9"
+dependencies = [
+ "log",
+ "ring",
+ "rustls-webpki",
+ "sct",
+]
+
+[[package]]
+name = "rustls-pemfile"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1c74cae0a4cf6ccbbf5f359f08efdf8ee7e1dc532573bf0db71968cb56b1448c"
+dependencies = [
+ "base64 0.21.5",
+]
+
+[[package]]
+name = "rustls-webpki"
+version = "0.101.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b6275d1ee7a1cd780b64aca7726599a1dbc893b1e64144529e55c3c2f745765"
+dependencies = [
+ "ring",
+ "untrusted",
+]
+
 [[package]]
 name = "rustversion"
 version = "1.0.14"
@@ -2731,6 +2795,16 @@ dependencies = [
  "syn 2.0.39",
 ]
 
+[[package]]
+name = "sct"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da046153aa2352493d6cb7da4b6e5c0c057d8a1d0a9aa8560baffdd945acd414"
+dependencies = [
+ "ring",
+ "untrusted",
+]
+
 [[package]]
 name = "sdk-schemas"
 version = "0.1.0"
@@ -3009,6 +3083,12 @@ version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 
+[[package]]
+name = "spin"
+version = "0.9.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
+
 [[package]]
 name = "spki"
 version = "0.7.2"
@@ -3285,6 +3365,16 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "tokio-rustls"
+version = "0.24.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c28327cf380ac148141087fbfb9de9d7bd4e84ab5d2c28fbc911d753de8a7081"
+dependencies = [
+ "rustls",
+ "tokio",
+]
+
 [[package]]
 name = "tokio-util"
 version = "0.7.10"
@@ -3623,6 +3713,12 @@ version = "0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f28467d3e1d3c6586d8f25fa243f544f5800fec42d97032474e17222c2b75cfa"
 
+[[package]]
+name = "untrusted"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
+
 [[package]]
 name = "url"
 version = "2.4.1"
@@ -3807,6 +3903,12 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "webpki-roots"
+version = "0.25.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1778a42e8b3b90bff8d0f5032bf22250792889a5cdc752aa0020c84abe3aaf10"
+
 [[package]]
 name = "weedle2"
 version = "4.0.0"
diff --git a/crates/bitwarden-api-api/Cargo.toml b/crates/bitwarden-api-api/Cargo.toml
index 2e05088e0..ee96864dd 100644
--- a/crates/bitwarden-api-api/Cargo.toml
+++ b/crates/bitwarden-api-api/Cargo.toml
@@ -22,5 +22,6 @@ uuid = { version = ">=1.3.3, <2", features = ["serde"] }
 [dependencies.reqwest]
 version = ">=0.11.18, <0.12"
 features = ["json", "multipart"]
+default-features = false
 
 [dev-dependencies]
diff --git a/crates/bitwarden-api-identity/Cargo.toml b/crates/bitwarden-api-identity/Cargo.toml
index 7207c5f8e..5e650a034 100644
--- a/crates/bitwarden-api-identity/Cargo.toml
+++ b/crates/bitwarden-api-identity/Cargo.toml
@@ -22,5 +22,6 @@ uuid = { version = ">=1.3.3, <2", features = ["serde"] }
 [dependencies.reqwest]
 version = ">=0.11.18, <0.12"
 features = ["json", "multipart"]
+default-features = false
 
 [dev-dependencies]
diff --git a/crates/bitwarden-json/Cargo.toml b/crates/bitwarden-json/Cargo.toml
index f7c0fd58d..ca8f5c7e1 100644
--- a/crates/bitwarden-json/Cargo.toml
+++ b/crates/bitwarden-json/Cargo.toml
@@ -14,13 +14,19 @@ edition = "2021"
 rust-version = "1.57"
 
 [features]
+default = ["use_native_tls"]
+
 internal = ["bitwarden/internal"] # Internal testing methods
 secrets = ["bitwarden/secrets"]   # Secrets manager API
 
+# TLS backend selection
+use_native_tls = ["bitwarden/use_native_tls"]
+use_rustls = ["bitwarden/use_rustls"]
+
 [dependencies]
 log = ">=0.4.18, <0.5"
 schemars = ">=0.8.12, <0.9"
 serde = { version = ">=1.0, <2.0", features = ["derive"] }
 serde_json = ">=1.0.96, <2.0"
 
-bitwarden = { path = "../bitwarden" }
+bitwarden = { path = "../bitwarden", default-features = false }
diff --git a/crates/bitwarden-py/Cargo.toml b/crates/bitwarden-py/Cargo.toml
index 94e9e6a43..d40c1f7bc 100644
--- a/crates/bitwarden-py/Cargo.toml
+++ b/crates/bitwarden-py/Cargo.toml
@@ -12,7 +12,10 @@ crate-type = ["cdylib"]
 pyo3 = { version = "0.20.0", features = ["extension-module"] }
 pyo3-log = "0.9.0"
 
-bitwarden-json = { path = "../bitwarden-json", features = ["secrets"] }
+bitwarden-json = { path = "../bitwarden-json", features = [
+    "secrets",
+    "use_rustls",
+], default-features = false }
 
 [build-dependencies]
 pyo3-build-config = { version = "0.20.0" }
diff --git a/crates/bitwarden/Cargo.toml b/crates/bitwarden/Cargo.toml
index aea2cfe9e..b65def061 100644
--- a/crates/bitwarden/Cargo.toml
+++ b/crates/bitwarden/Cargo.toml
@@ -13,12 +13,16 @@ edition = "2021"
 rust-version = "1.57"
 
 [features]
-default = ["secrets"]
+default = ["secrets", "use_native_tls"]
 
 secrets = []                    # Secrets manager API
 internal = []                   # Internal testing methods
 mobile = ["uniffi", "internal"] # Mobile-specific features
 
+# TLS backend selection
+use_native_tls = ["reqwest/native-tls"]
+use_rustls = ["reqwest/rustls-tls"]
+
 [dependencies]
 aes = ">=0.8.2, <0.9"
 argon2 = { version = ">=0.5.0, <0.6", features = [
@@ -43,7 +47,9 @@ num-bigint = ">=0.4, <0.5"
 num-traits = ">=0.2.15, <0.3"
 pbkdf2 = { version = ">=0.12.1, <0.13", default-features = false }
 rand = ">=0.8.5, <0.9"
-reqwest = { version = ">=0.11, <0.12", features = ["json"] }
+reqwest = { version = ">=0.11, <0.12", features = [
+    "json",
+], default-features = false }
 rsa = ">=0.9.2, <0.10"
 schemars = { version = ">=0.8, <0.9", features = ["uuid1", "chrono"] }
 serde = { version = ">=1.0, <2.0", features = ["derive"] }