diff --git a/Cargo.lock b/Cargo.lock
index d2505ed..9437592 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -202,6 +202,17 @@ dependencies = [
  "pin-utils",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4567c8db10ae91089c99af84c68c38da3ec2f087c3f82960bcdbf3656b6f4d7"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
 [[package]]
 name = "gimli"
 version = "0.28.1"
@@ -299,6 +310,23 @@ dependencies = [
  "want",
 ]
 
+[[package]]
+name = "hyper-rustls"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a0bea761b46ae2b24eb4aef630d8d1c398157b6fc29e6350ecf090a0b70c952c"
+dependencies = [
+ "futures-util",
+ "http",
+ "hyper",
+ "hyper-util",
+ "rustls",
+ "rustls-pki-types",
+ "tokio",
+ "tokio-rustls",
+ "tower-service",
+]
+
 [[package]]
 name = "hyper-tls"
 version = "0.6.0"
@@ -642,6 +670,7 @@ dependencies = [
  "http-body",
  "http-body-util",
  "hyper",
+ "hyper-rustls",
  "hyper-tls",
  "hyper-util",
  "ipnet",
@@ -652,7 +681,10 @@ dependencies = [
  "once_cell",
  "percent-encoding",
  "pin-project-lite",
+ "rustls",
+ "rustls-native-certs",
  "rustls-pemfile",
+ "rustls-pki-types",
  "serde",
  "serde_json",
  "serde_urlencoded",
@@ -660,6 +692,7 @@ dependencies = [
  "system-configuration",
  "tokio",
  "tokio-native-tls",
+ "tokio-rustls",
  "tower-service",
  "url",
  "wasm-bindgen",
@@ -668,6 +701,21 @@ dependencies = [
  "winreg",
 ]
 
+[[package]]
+name = "ring"
+version = "0.17.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c17fa4cb658e3583423e915b9f3acc01cceaee1860e33d59ebae66adc3a2dc0d"
+dependencies = [
+ "cc",
+ "cfg-if",
+ "getrandom",
+ "libc",
+ "spin",
+ "untrusted",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "rustc-demangle"
 version = "0.1.24"
@@ -687,6 +735,33 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "rustls"
+version = "0.22.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf4ef73721ac7bcd79b2b315da7779d8fc09718c6b3d2d1b2d94850eb8c18432"
+dependencies = [
+ "log",
+ "ring",
+ "rustls-pki-types",
+ "rustls-webpki",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "rustls-native-certs"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f1fb85efa936c42c6d5fc28d2629bb51e4b2f4b8a5211e297d599cc5a093792"
+dependencies = [
+ "openssl-probe",
+ "rustls-pemfile",
+ "rustls-pki-types",
+ "schannel",
+ "security-framework",
+]
+
 [[package]]
 name = "rustls-pemfile"
 version = "2.1.2"
@@ -703,6 +778,17 @@ version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "976295e77ce332211c0d24d92c0e83e50f5c5f046d11082cea19f3df13a3562d"
 
+[[package]]
+name = "rustls-webpki"
+version = "0.102.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff448f7e92e913c4b7d4c6d8e4540a1724b319b4152b8aef6d4cf8339712b33e"
+dependencies = [
+ "ring",
+ "rustls-pki-types",
+ "untrusted",
+]
+
 [[package]]
 name = "ryu"
 version = "1.0.18"
@@ -824,6 +910,18 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "spin"
+version = "0.9.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
+
+[[package]]
+name = "subtle"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "81cdd64d312baedb58e21336b31bc043b77e01cc99033ce76ef539f78e965ebc"
+
 [[package]]
 name = "syn"
 version = "2.0.66"
@@ -929,6 +1027,17 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "tokio-rustls"
+version = "0.25.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "775e0c0f0adb3a2f22a00c4745d728b479985fc15ee7ca6a2608388c5569860f"
+dependencies = [
+ "rustls",
+ "rustls-pki-types",
+ "tokio",
+]
+
 [[package]]
 name = "tokio-util"
 version = "0.7.11"
@@ -1015,6 +1124,12 @@ dependencies = [
  "tinyvec",
 ]
 
+[[package]]
+name = "untrusted"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
+
 [[package]]
 name = "url"
 version = "2.5.0"
@@ -1271,3 +1386,9 @@ dependencies = [
  "cfg-if",
  "windows-sys 0.48.0",
 ]
+
+[[package]]
+name = "zeroize"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ced3678a2879b30306d323f4542626697a464a97c0a07c9aebf7ebca65cd4dde"
diff --git a/Cargo.toml b/Cargo.toml
index 016dab2..3d5d163 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,7 @@ publish = true
 description = "An OpenADR 3.0 VTN/VEN implementation"
 
 [dependencies]
-reqwest = "0.12.4"
+reqwest = { version = "0.12.4", features = ["rustls-tls-native-roots"] }
 serde = { version = "1.0.203", features = ["derive"] }
 serde_json = "1.0.117"
 tokio = { version = "1.37.0", features = ["full"] }
diff --git a/deny.toml b/deny.toml
index d1cdfd5..0283e61 100644
--- a/deny.toml
+++ b/deny.toml
@@ -12,4 +12,12 @@ allow = [
     "MIT",
     "Apache-2.0",
     "Unicode-DFS-2016",
+    "BSD-3-Clause",
+    "ISC",
+    "OpenSSL",
 ]
+
+[[licenses.clarify]]
+name = "ring"
+expression = "ISC AND MIT AND OpenSSL"
+license-files = [{ path = "LICENSE", hash = 0xbd0eed23 }]