diff --git a/examples/complete/manifest.toml b/examples/complete/manifest.toml
index a95cf3a..cc05077 100644
--- a/examples/complete/manifest.toml
+++ b/examples/complete/manifest.toml
@@ -2,16 +2,18 @@
 # You typically do not need to edit this file
 
 packages = [
-  { name = "birl", version = "1.6.1", build_tools = ["gleam"], requirements = ["gleam_stdlib", "ranger"], otp_app = "birl", source = "hex", outer_checksum = "976CFF85D34D50F7775896615A71745FBE0C325E50399787088F941B539A0497" },
+  { name = "birl", version = "1.7.0", build_tools = ["gleam"], requirements = ["gleam_stdlib", "ranger"], otp_app = "birl", source = "hex", outer_checksum = "B1FA529E7BE3FF12CADF32814AB8EC7294E74CEDEE8CC734505707B929A98985" },
+  { name = "gleam_crypto", version = "1.3.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_crypto", source = "hex", outer_checksum = "ADD058DEDE8F0341F1ADE3AAC492A224F15700829D9A3A3F9ADF370F875C51B7" },
   { name = "gleam_erlang", version = "0.25.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "054D571A7092D2A9727B3E5D183B7507DAB0DA41556EC9133606F09C15497373" },
   { name = "gleam_http", version = "3.6.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_http", source = "hex", outer_checksum = "8C07DF9DF8CC7F054C650839A51C30A7D3C26482AC241C899C1CEA86B22DBE51" },
   { name = "gleam_otp", version = "0.10.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_stdlib"], otp_app = "gleam_otp", source = "hex", outer_checksum = "0B04FE915ACECE539B317F9652CAADBBC0F000184D586AAAF2D94C100945D72B" },
-  { name = "gleam_stdlib", version = "0.37.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "5398BD6C2ABA17338F676F42F404B9B7BABE1C8DC7380031ACB05BBE1BCF3742" },
+  { name = "gleam_stdlib", version = "0.38.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "663CF11861179AF415A625307447775C09404E752FF99A24E2057C835319F1BE" },
   { name = "gleeunit", version = "1.1.2", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "72CDC3D3F719478F26C4E2C5FED3E657AC81EC14A47D2D2DEBB8693CA3220C3B" },
   { name = "glisten", version = "2.0.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_otp", "gleam_stdlib"], otp_app = "glisten", source = "hex", outer_checksum = "CF3A9383E9BA4A8CBAF2F7B799716290D02F2AC34E7A77556B49376B662B9314" },
+  { name = "gramps", version = "2.0.2", build_tools = ["gleam"], requirements = ["gleam_crypto", "gleam_erlang", "gleam_http", "gleam_stdlib"], otp_app = "gramps", source = "hex", outer_checksum = "99A1BC8462E502282097D92CD7053043B714B91DC78E8AEB7D86AB8FF71E016F" },
   { name = "hpack_erl", version = "0.3.0", build_tools = ["rebar3"], requirements = [], otp_app = "hpack", source = "hex", outer_checksum = "D6137D7079169D8C485C6962DFE261AF5B9EF60FBC557344511C1E65E3D95FB0" },
   { name = "logging", version = "1.1.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "logging", source = "hex", outer_checksum = "A996064F04EF6E67F0668FD0ACFB309830B05D0EE3A0C11BBBD2D4464334F792" },
-  { name = "mist", version = "1.0.0", build_tools = ["gleam"], requirements = ["birl", "gleam_erlang", "gleam_http", "gleam_otp", "gleam_stdlib", "glisten", "hpack_erl", "logging"], source = "local", path = "../.." },
+  { name = "mist", version = "1.0.0", build_tools = ["gleam"], requirements = ["birl", "gleam_erlang", "gleam_http", "gleam_otp", "gleam_stdlib", "glisten", "gramps", "hpack_erl", "logging"], source = "local", path = "../.." },
   { name = "ranger", version = "1.2.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "ranger", source = "hex", outer_checksum = "1566C272B1D141B3BBA38B25CB761EF56E312E79EC0E2DFD4D3C19FB0CC1F98C" },
 ]
 
diff --git a/examples/complete/src/complete.gleam b/examples/complete/src/complete.gleam
index 12aa283..fdd2b14 100644
--- a/examples/complete/src/complete.gleam
+++ b/examples/complete/src/complete.gleam
@@ -45,6 +45,8 @@ pub fn main() {
       case request.path_segments(req) {
         [] ->
           response.new(200)
+          |> response.prepend_header("my-value", "abc")
+          |> response.prepend_header("my-value", "123")
           |> response.set_body(mist.Bytes(bytes_builder.from_string(index)))
         ["ws"] ->
           mist.websocket(
@@ -78,7 +80,8 @@ fn handle_ws_message(state, conn, message) {
       let assert Ok(_) = mist.send_text_frame(conn, "pong")
       actor.continue(state)
     }
-    mist.Text(_) | mist.Binary(_) -> {
+    mist.Text(_)
+    | mist.Binary(_) -> {
       actor.continue(state)
     }
     mist.Custom(Broadcast(text)) -> {
diff --git a/manifest.toml b/manifest.toml
index 5f8b1c7..0c109d9 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -2,17 +2,17 @@
 # You typically do not need to edit this file
 
 packages = [
-  { name = "birl", version = "1.6.1", build_tools = ["gleam"], requirements = ["gleam_stdlib", "ranger"], otp_app = "birl", source = "hex", outer_checksum = "976CFF85D34D50F7775896615A71745FBE0C325E50399787088F941B539A0497" },
+  { name = "birl", version = "1.7.0", build_tools = ["gleam"], requirements = ["gleam_stdlib", "ranger"], otp_app = "birl", source = "hex", outer_checksum = "B1FA529E7BE3FF12CADF32814AB8EC7294E74CEDEE8CC734505707B929A98985" },
   { name = "certifi", version = "2.12.0", build_tools = ["rebar3"], requirements = [], otp_app = "certifi", source = "hex", outer_checksum = "EE68D85DF22E554040CDB4BE100F33873AC6051387BAF6A8F6CE82272340FF1C" },
   { name = "gleam_crypto", version = "1.3.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_crypto", source = "hex", outer_checksum = "ADD058DEDE8F0341F1ADE3AAC492A224F15700829D9A3A3F9ADF370F875C51B7" },
   { name = "gleam_erlang", version = "0.25.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "054D571A7092D2A9727B3E5D183B7507DAB0DA41556EC9133606F09C15497373" },
   { name = "gleam_hackney", version = "1.2.0", build_tools = ["gleam"], requirements = ["gleam_http", "gleam_stdlib", "hackney"], otp_app = "gleam_hackney", source = "hex", outer_checksum = "066B1A55D37DBD61CC72A1C4EDE43C6015B1797FAF3818C16FE476534C7B6505" },
   { name = "gleam_http", version = "3.6.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_http", source = "hex", outer_checksum = "8C07DF9DF8CC7F054C650839A51C30A7D3C26482AC241C899C1CEA86B22DBE51" },
   { name = "gleam_otp", version = "0.10.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_stdlib"], otp_app = "gleam_otp", source = "hex", outer_checksum = "0B04FE915ACECE539B317F9652CAADBBC0F000184D586AAAF2D94C100945D72B" },
-  { name = "gleam_stdlib", version = "0.37.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "5398BD6C2ABA17338F676F42F404B9B7BABE1C8DC7380031ACB05BBE1BCF3742" },
+  { name = "gleam_stdlib", version = "0.38.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "663CF11861179AF415A625307447775C09404E752FF99A24E2057C835319F1BE" },
   { name = "gleeunit", version = "1.1.2", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "72CDC3D3F719478F26C4E2C5FED3E657AC81EC14A47D2D2DEBB8693CA3220C3B" },
   { name = "glisten", version = "2.0.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_otp", "gleam_stdlib"], otp_app = "glisten", source = "hex", outer_checksum = "CF3A9383E9BA4A8CBAF2F7B799716290D02F2AC34E7A77556B49376B662B9314" },
-  { name = "gramps", version = "2.0.1", build_tools = ["gleam"], requirements = ["gleam_crypto", "gleam_erlang", "gleam_http", "gleam_stdlib"], otp_app = "gramps", source = "hex", outer_checksum = "FBB7EA641C8A1EF02C0E938B6045A1360B925E5E65BAD0E228C4AEF6C6933722" },
+  { name = "gramps", version = "2.0.2", build_tools = ["gleam"], requirements = ["gleam_crypto", "gleam_erlang", "gleam_http", "gleam_stdlib"], otp_app = "gramps", source = "hex", outer_checksum = "99A1BC8462E502282097D92CD7053043B714B91DC78E8AEB7D86AB8FF71E016F" },
   { name = "hackney", version = "1.20.1", build_tools = ["rebar3"], requirements = ["certifi", "idna", "metrics", "mimerl", "parse_trans", "ssl_verify_fun", "unicode_util_compat"], otp_app = "hackney", source = "hex", outer_checksum = "FE9094E5F1A2A2C0A7D10918FEE36BFEC0EC2A979994CFF8CFE8058CD9AF38E3" },
   { name = "hpack_erl", version = "0.3.0", build_tools = ["rebar3"], requirements = [], otp_app = "hpack", source = "hex", outer_checksum = "D6137D7079169D8C485C6962DFE261AF5B9EF60FBC557344511C1E65E3D95FB0" },
   { name = "idna", version = "6.1.1", build_tools = ["rebar3"], requirements = ["unicode_util_compat"], otp_app = "idna", source = "hex", outer_checksum = "92376EB7894412ED19AC475E4A86F7B413C1B9FBB5BD16DCCD57934157944CEA" },
diff --git a/src/mist/internal/http.gleam b/src/mist/internal/http.gleam
index 7633132..a8107d8 100644
--- a/src/mist/internal/http.gleam
+++ b/src/mist/internal/http.gleam
@@ -1,5 +1,4 @@
 import gleam/bit_array
-import gleam/bool
 import gleam/bytes_builder.{type BytesBuilder}
 import gleam/dict.{type Dict}
 import gleam/dynamic.{type Dynamic}
@@ -223,7 +222,8 @@ fn read_chunk(
           }
       }
     }
-    <<>> as data, _ | data, Error(Nil) -> {
+    <<>> as data, _
+    | data, Error(Nil) -> {
       use next <- result.then(read_data(
         socket,
         transport,
@@ -383,7 +383,9 @@ pub fn read_body(
         data: data,
         remaining: remaining,
         attempts: attempts,
-      ) if remaining > 0 -> {
+      )
+      if remaining > 0
+    -> {
       let res =
         selector
         |> process.select(1000)
diff --git a/src/mist/internal/http/handler.gleam b/src/mist/internal/http/handler.gleam
index 438d573..745ef01 100644
--- a/src/mist/internal/http/handler.gleam
+++ b/src/mist/internal/http/handler.gleam
@@ -1,5 +1,4 @@
 import gleam/bytes_builder.{type BytesBuilder}
-import gleam/dynamic
 import gleam/erlang.{Errored, Exited, Thrown, rescue}
 import gleam/erlang/process.{type Subject}
 import gleam/http as ghttp
@@ -65,7 +64,9 @@ fn log_and_error(
   req: Request(Connection),
 ) -> process.ExitReason {
   case error {
-    Exited(msg) | Thrown(msg) | Errored(msg) -> {
+    Exited(msg)
+    | Thrown(msg)
+    | Errored(msg) -> {
       logging.log(logging.Error, string.inspect(error))
       let _ =
         response.new(500)
@@ -77,7 +78,7 @@ fn log_and_error(
         |> encoder.to_bytes_builder
         |> transport.send(transport, socket, _)
       let _ = transport.close(transport, socket)
-      process.Abnormal(dynamic.unsafe_coerce(msg))
+      process.Abnormal(string.inspect(msg))
     }
   }
 }
diff --git a/src/mist/internal/http2.gleam b/src/mist/internal/http2.gleam
index 6f511d6..99d99f0 100644
--- a/src/mist/internal/http2.gleam
+++ b/src/mist/internal/http2.gleam
@@ -1,7 +1,7 @@
 import gleam/bytes_builder.{type BytesBuilder}
 import gleam/erlang
 import gleam/erlang/process
-import gleam/http.{type Header} as ghttp
+import gleam/http.{type Header} as _ghttp
 import gleam/http/response.{type Response}
 import gleam/int
 import gleam/list
@@ -138,12 +138,16 @@ pub fn send_bytes_builder(
     0 -> send_headers(context, conn, headers, True, id)
     _ -> {
       send_headers(context, conn, headers, False, id)
-      |> result.then(fn(context) {
-        // TODO:  this should be broken up by window size
-        // TODO:  fix end_stream
-        send_data(conn, bytes_builder.to_bit_array(resp.body), id, True)
-        |> result.replace(context)
-      })
+      |> result.then(
+        fn(
+          context,
+          // TODO:  this should be broken up by window size
+          // TODO:  fix end_stream
+        ) {
+          send_data(conn, bytes_builder.to_bit_array(resp.body), id, True)
+          |> result.replace(context)
+        },
+      )
     }
   }
 }
diff --git a/test/http1_test.gleam b/test/http1_test.gleam
index a623fb6..26f5577 100644
--- a/test/http1_test.gleam
+++ b/test/http1_test.gleam
@@ -239,8 +239,3 @@ pub fn it_sends_back_chunked_responses_test() {
   should.equal(resp.status, 200)
   should.equal(resp.body, string.repeat("a", 1000))
 }
-
-pub fn it_allows_multiple_headers_test() {
-  // TODO:  fix
-  should.equal(False, True)
-}