diff --git a/gleam.toml b/gleam.toml
index d162fc5..6381761 100644
--- a/gleam.toml
+++ b/gleam.toml
@@ -15,4 +15,4 @@ gleam_time = ">= 1.2.0 and < 2.0.0"
 
 [dev-dependencies]
 gleeunit = ">= 1.5.1 and < 2.0.0"
-dot_env = ">= 1.2.0 and < 2.0.0"
+envoy = ">= 1.0.2 and < 2.0.0"
diff --git a/manifest.toml b/manifest.toml
index 574fa83..a4ceea4 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -2,8 +2,7 @@
 # You typically do not need to edit this file
 
 packages = [
-  { name = "dot_env", version = "1.2.0", build_tools = ["gleam"], requirements = ["gleam_stdlib", "simplifile"], otp_app = "dot_env", source = "hex", outer_checksum = "F2B4815F1B5AF8F20A6EADBB393E715C4C35203EBD5BE8200F766EA83A0B18DE" },
-  { name = "filepath", version = "1.1.2", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "filepath", source = "hex", outer_checksum = "B06A9AF0BF10E51401D64B98E4B627F1D2E48C154967DA7AF4D0914780A6D40A" },
+  { name = "envoy", version = "1.0.2", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "envoy", source = "hex", outer_checksum = "95FD059345AA982E89A0B6E2A3BF1CF43E17A7048DCD85B5B65D3B9E4E39D359" },
   { name = "gleam_erlang", version = "1.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "7E6A5234F927C4B24F8054AB1E4572206C41F9E6D5C6C02273CB7531E7E5CED0" },
   { name = "gleam_http", version = "4.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_http", source = "hex", outer_checksum = "0A62451FC85B98062E0907659D92E6A89F5F3C0FBE4AB8046C99936BF6F91DBC" },
   { name = "gleam_httpc", version = "4.1.1", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_http", "gleam_stdlib"], otp_app = "gleam_httpc", source = "hex", outer_checksum = "C670EBD46FC1472AD5F1F74F1D3938D1D0AC1C7531895ED1D4DDCB6F07279F43" },
@@ -11,11 +10,10 @@ packages = [
   { name = "gleam_stdlib", version = "0.60.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "621D600BB134BC239CB2537630899817B1A42E60A1D46C5E9F3FAE39F88C800B" },
   { name = "gleam_time", version = "1.2.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_time", source = "hex", outer_checksum = "D71F1AFF7FEB534FF55E5DC58E534E9201BA75A444619788A2E4DEA4EBD87D16" },
   { name = "gleeunit", version = "1.5.1", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "D33B7736CF0766ED3065F64A1EBB351E72B2E8DE39BAFC8ADA0E35E92A6A934F" },
-  { name = "simplifile", version = "2.2.1", build_tools = ["gleam"], requirements = ["filepath", "gleam_stdlib"], otp_app = "simplifile", source = "hex", outer_checksum = "C88E0EE2D509F6D86EB55161D631657675AA7684DAB83822F7E59EB93D9A60E3" },
 ]
 
 [requirements]
-dot_env = { version = ">= 1.2.0 and < 2.0.0" }
+envoy = { version = ">= 1.0.2 and < 2.0.0" }
 gleam_http = { version = ">= 4.0.0 and < 5.0.0" }
 gleam_httpc = { version = ">= 4.1.1 and < 5.0.0" }
 gleam_json = { version = ">= 3.0.1 and < 4.0.0" }
diff --git a/test/spacetraders_sdk_test.gleam b/test/spacetraders_sdk_test.gleam
index b8d1f1f..fde25b7 100644
--- a/test/spacetraders_sdk_test.gleam
+++ b/test/spacetraders_sdk_test.gleam
@@ -16,7 +16,7 @@ pub fn error_codes_test() {
 
 pub fn account_test() {
   let assert Ok(_) =
-    spacetraders_api.get_account(env.load_dotenv_unsafe().agent_token)
+    spacetraders_api.get_account(env.load_env_unsafe().agent_token)
 }
 
 pub fn supply_chain_test() {
diff --git a/test/spacetraders_sdk_test/env.gleam b/test/spacetraders_sdk_test/env.gleam
index 5c342ba..287ee1f 100644
--- a/test/spacetraders_sdk_test/env.gleam
+++ b/test/spacetraders_sdk_test/env.gleam
@@ -1,7 +1,8 @@
-import dot_env
-import dot_env/env
+import envoy
 import gleam/result
-import spacetraders_sdk.{type AccountToken, type AgentToken}
+import spacetraders_sdk.{
+  type AccountToken, type AgentToken, type TokenParseError,
+}
 
 pub type Env {
   Env(account_token: AccountToken, agent_token: AgentToken)
@@ -9,25 +10,27 @@ pub type Env {
 
 pub type EnvError {
   MissingVar(name: String)
-  InvalidVar(name: String)
+  InvalidTokenVar(name: String, error: TokenParseError)
+}
+
+fn get(name: String) -> Result(String, EnvError) {
+  envoy.get(name)
+  |> result.replace_error(MissingVar(name:))
+}
+
+fn get_token(name: String, parse: fn(String) -> Result(token, TokenParseError)) {
+  get(name)
+  |> result.then(fn(value) {
+    parse(value) |> result.map_error(InvalidTokenVar(name:, error: _))
+  })
 }
 
 pub fn get_account_token() -> Result(AccountToken, EnvError) {
-  env.get_string("ACCOUNT_TOKEN")
-  |> result.replace_error(MissingVar("ACCOUNT_TOKEN"))
-  |> result.then(fn(value) {
-    spacetraders_sdk.parse_account_token(value)
-    |> result.replace_error(InvalidVar("ACCOUNT_TOKEN"))
-  })
+  get_token("ACCOUNT_TOKEN", spacetraders_sdk.parse_account_token)
 }
 
 pub fn get_agent_token() -> Result(AgentToken, EnvError) {
-  env.get_string("AGENT_TOKEN")
-  |> result.replace_error(MissingVar("AGENT_TOKEN"))
-  |> result.then(fn(value) {
-    spacetraders_sdk.parse_agent_token(value)
-    |> result.replace_error(InvalidVar("AGENT_TOKEN"))
-  })
+  get_token("AGENT_TOKEN", spacetraders_sdk.parse_agent_token)
 }
 
 pub fn load_env() -> Result(Env, EnvError) {
@@ -36,11 +39,6 @@ pub fn load_env() -> Result(Env, EnvError) {
   Ok(Env(account_token:, agent_token:))
 }
 
-pub fn load_dotenv() -> Result(Env, EnvError) {
-  dot_env.load_default()
-  load_env()
-}
-
 pub fn load_env_unsafe() -> Env {
   let assert Ok(account_token) = get_account_token()
     as "Missing or invalid account token"
@@ -48,8 +46,3 @@ pub fn load_env_unsafe() -> Env {
     as "Missing or invalid agent token"
   Env(account_token:, agent_token:)
 }
-
-pub fn load_dotenv_unsafe() -> Env {
-  dot_env.load_default()
-  load_env_unsafe()
-}