diff --git a/Cargo.lock b/Cargo.lock
index a9f9d865..d22e74fa 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -139,6 +139,12 @@ version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
 
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
 [[package]]
 name = "bitflags"
 version = "2.5.0"
@@ -195,6 +201,34 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "cookie"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7efb37c3e1ccb1ff97164ad95ac1606e8ccd35b3fa0a7d99a304c7f4a428cc24"
+dependencies = [
+ "percent-encoding",
+ "time",
+ "version_check",
+]
+
+[[package]]
+name = "cookie_store"
+version = "0.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "387461abbc748185c3a6e1673d826918b450b87ff22639429c694619a83b6cf6"
+dependencies = [
+ "cookie",
+ "idna 0.3.0",
+ "log",
+ "publicsuffix",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "time",
+ "url",
+]
+
 [[package]]
 name = "core-foundation"
 version = "0.9.4"
@@ -793,6 +827,16 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
 
+[[package]]
+name = "idna"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e14ddfc70884202db2244c223200c204c2bda1bc6e0998d11b5e024d657209e6"
+dependencies = [
+ "unicode-bidi",
+ "unicode-normalization",
+]
+
 [[package]]
 name = "idna"
 version = "0.4.0"
@@ -1045,7 +1089,7 @@ version = "0.10.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9529f4786b70a3e8c61e11179af17ab6188ad8d0ded78c5529441ed39d4bd9c1"
 dependencies = [
- "bitflags",
+ "bitflags 2.5.0",
  "cfg-if",
  "foreign-types",
  "libc",
@@ -1197,6 +1241,22 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "psl-types"
+version = "2.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33cb294fe86a74cbcf50d4445b37da762029549ebeea341421c7c70370f86cac"
+
+[[package]]
+name = "publicsuffix"
+version = "2.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96a8c1bda5ae1af7f99a2962e49df150414a43d62404644d98dd5c3a93d07457"
+dependencies = [
+ "idna 0.3.0",
+ "psl-types",
+]
+
 [[package]]
 name = "quick-error"
 version = "1.2.3"
@@ -1248,7 +1308,7 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "469052894dcb553421e483e4209ee581a45100d31b4018de03e5a7ad86374a7e"
 dependencies = [
- "bitflags",
+ "bitflags 2.5.0",
 ]
 
 [[package]]
@@ -1304,7 +1364,10 @@ dependencies = [
  "async-compression",
  "base64 0.22.1",
  "bytes",
+ "cookie",
+ "cookie_store",
  "encoding_rs",
+ "futures-channel",
  "futures-core",
  "futures-util",
  "h2",
@@ -1333,6 +1396,7 @@ dependencies = [
  "serde_json",
  "serde_urlencoded",
  "sync_wrapper",
+ "system-configuration",
  "tokio",
  "tokio-native-tls",
  "tokio-rustls",
@@ -1385,7 +1449,7 @@ version = "0.38.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "70dc5ec042f7a43c4a73241207cecc9873a06d45debb38b329f8541d85c2730f"
 dependencies = [
- "bitflags",
+ "bitflags 2.5.0",
  "errno",
  "libc",
  "linux-raw-sys",
@@ -1473,7 +1537,7 @@ version = "2.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c627723fd09706bacdb5cf41499e95098555af3c3c29d014dc3c458ef6be11c0"
 dependencies = [
- "bitflags",
+ "bitflags 2.5.0",
  "core-foundation",
  "core-foundation-sys",
  "libc",
@@ -1611,6 +1675,27 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2047c6ded9c721764247e62cd3b03c09ffc529b2ba5b10ec482ae507a4a70160"
 
+[[package]]
+name = "system-configuration"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba3a3adc5c275d719af8cb4272ea1c4a6d668a777f37e115f6d11ddbc1c8e0e7"
+dependencies = [
+ "bitflags 1.3.2",
+ "core-foundation",
+ "system-configuration-sys",
+]
+
+[[package]]
+name = "system-configuration-sys"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75fb188eb626b924683e3b95e3a48e63551fcfb51949de2f06a9d91dbee93c9"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.10.1"
diff --git a/crates/fhir-sdk/Cargo.toml b/crates/fhir-sdk/Cargo.toml
index 52e277e4..2b6d057f 100644
--- a/crates/fhir-sdk/Cargo.toml
+++ b/crates/fhir-sdk/Cargo.toml
@@ -17,7 +17,7 @@ version = "0.14.1"
 workspace = true
 
 [features]
-default = ["r5", "builders", "client", "docs", "http2", "default-tls", "charset"]
+default = ["r5", "builders", "client", "docs", "dep-defaults"]
 client = [
 	"builders",
 	"dep:async-trait",
@@ -35,15 +35,21 @@ stu3 = ["fhir-model/stu3"]
 r4b = ["fhir-model/r4b"]
 r5 = ["fhir-model/r5"]
 docs = []
+
+dep-defaults = ["reqwest?/default"]
+
 http2 = ["reqwest?/http2"]
 default-tls = ["reqwest?/default-tls"]
 native-tls = ["reqwest?/native-tls"]
 native-tls-vendored = ["reqwest?/native-tls-vendored"]
 native-tls-alpn = ["reqwest?/native-tls-alpn"]
 rustls-tls = ["reqwest?/rustls-tls"]
+rustls-tls-manual-roots = ["reqwest?/rustls-tls-manual-roots"]
 rustls-tls-webpki-roots = ["reqwest?/rustls-tls-webpki-roots"]
 rustls-tls-native-roots = ["reqwest?/rustls-tls-native-roots"]
+blocking = ["reqwest?/blocking"]
 charset = ["reqwest?/charset"]
+cookies = ["reqwest?/cookies"]
 gzip = ["reqwest?/gzip"]
 brotli = ["reqwest?/brotli"]
 zstd = ["reqwest?/zstd"]
@@ -52,12 +58,13 @@ multipart = ["reqwest?/multipart"]
 stream = ["reqwest?/stream"]
 socks = ["reqwest?/socks"]
 hickory-dns = ["reqwest?/hickory-dns"]
+macos-system-configuration = ["reqwest?/macos-system-configuration"]
 
 [dependencies]
 async-trait = { version = "0.1.68", optional = true }
 fhir-model = { path = "../fhir-model", version = "0.12.0", default-features = false }
 futures = { version = "0.3.28", optional = true }
-reqwest = { version = "0.12.2", default-features = false, features = ["json", "http2", "charset"], optional = true }
+reqwest = { version = "0.12.2", default-features = false, features = ["json"], optional = true }
 serde = { version = "1.0.159" }
 serde_json = { version = "1.0.95", optional = true }
 thiserror = { version = "1.0.40", optional = true }
@@ -73,5 +80,5 @@ tracing-subscriber = { version = "0.3.17", features = ["env-filter"] }
 wiremock = "0.6.1"
 
 [package.metadata.docs.rs]
-features = ["r5", "builders", "client", "docs"]
+features = ["r5", "builders", "client", "docs", "dep-defaults"]
 no-default-features = true