diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8cafdfd..3e8a826 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## Unreleased
+
+- Rad now requires `glint` v0.16 or later.
+
 ## v1.1.0 - 2024-02-17
 
 - Rad now uses npm package `smol-toml` for more feature-complete TOML parsing.
diff --git a/gleam.toml b/gleam.toml
index 2eb5640..9202939 100644
--- a/gleam.toml
+++ b/gleam.toml
@@ -1,5 +1,5 @@
 name = "rad"
-version = "1.1.0"
+version = "1.2.0-dev"
 description = "A task runner for Gleam projects"
 licences = ["Apache-2.0"]
 target = "javascript"
@@ -19,7 +19,7 @@ gleam_http = "~> 3.5"
 gleam_httpc = "~> 2.1"
 gleam_json = "~> 0.7 or ~> 1.0"
 gleam_stdlib = "~> 0.34 or ~> 1.0"
-glint = "~> 0.15 or ~> 1.0"
+glint = "~> 0.16 or ~> 1.0"
 shellout = "~> 1.6"
 snag = "~> 0.3 or ~> 1.0"
 thoas = "~> 0.4 or ~> 1.0"
diff --git a/manifest.toml b/manifest.toml
index 9b3a7dc..292d8ba 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -7,9 +7,9 @@ packages = [
   { name = "gleam_http", version = "3.5.3", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_http", source = "hex", outer_checksum = "C2FC3322203B16F897C1818D9810F5DEFCE347F0751F3B44421E1261277A7373" },
   { name = "gleam_httpc", version = "2.1.2", build_tools = ["gleam"], requirements = ["gleam_http", "gleam_stdlib"], otp_app = "gleam_httpc", source = "hex", outer_checksum = "ACD05CA3BAC7780DF5FFAE334621FD199D1B490FAF6ECDFF74316CAA61CE88E6" },
   { name = "gleam_json", version = "1.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib", "thoas"], otp_app = "gleam_json", source = "hex", outer_checksum = "8B197DD5D578EA6AC2C0D4BDC634C71A5BCA8E7DB5F47091C263ECB411A60DF3" },
-  { name = "gleam_stdlib", version = "0.35.1", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "5443EEB74708454B65650FEBBB1EF5175057D1DEC62AEA9D7C6D96F41DA79152" },
+  { name = "gleam_stdlib", version = "0.36.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "C0D14D807FEC6F8A08A7C9EF8DFDE6AE5C10E40E21325B2B29365965D82EB3D4" },
   { name = "gleeunit", version = "1.0.2", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "D364C87AFEB26BDB4FB8A5ABDE67D635DC9FA52D6AB68416044C35B096C6882D" },
-  { name = "glint", version = "0.15.0", build_tools = ["gleam"], requirements = ["gleam_community_ansi", "gleam_community_colour", "gleam_stdlib", "snag"], otp_app = "glint", source = "hex", outer_checksum = "D5324DBE11F57BF0B303D99EA086D66B8DC319EE59C1355C76EBB1544187C237" },
+  { name = "glint", version = "0.16.0", build_tools = ["gleam"], requirements = ["gleam_community_ansi", "gleam_community_colour", "gleam_stdlib", "snag"], otp_app = "glint", source = "hex", outer_checksum = "61B7E85CBB0CCD2FD8A9C7AE06CA97A80BF6537716F34362A39DF9C74967BBBC" },
   { name = "shellout", version = "1.6.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "shellout", source = "hex", outer_checksum = "E2FCD18957F0E9F67E1F497FC9FF57393392F8A9BAEAEA4779541DE7A68DD7E0" },
   { name = "snag", version = "0.3.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "snag", source = "hex", outer_checksum = "54D32E16E33655346AA3E66CBA7E191DE0A8793D2C05284E3EFB90AD2CE92BCC" },
   { name = "thoas", version = "0.4.1", build_tools = ["rebar3"], requirements = [], otp_app = "thoas", source = "hex", outer_checksum = "4918D50026C073C4AB1388437132C77A6F6F7C8AC43C60C13758CC0ADCE2134E" },
@@ -22,7 +22,7 @@ gleam_httpc = { version = "~> 2.1" }
 gleam_json = { version = "~> 0.7 or ~> 1.0" }
 gleam_stdlib = { version = "~> 0.34 or ~> 1.0" }
 gleeunit = { version = "~> 1.0" }
-glint = { version = "~> 0.15 or ~> 1.0" }
+glint = { version = "~> 0.16 or ~> 1.0" }
 shellout = { version = "~> 1.6" }
 snag = { version = "~> 0.3 or ~> 1.0" }
 thoas = { version = "~> 0.4 or ~> 1.0" }
diff --git a/src/rad.gleam b/src/rad.gleam
index e252217..3d46975 100644
--- a/src/rad.gleam
+++ b/src/rad.gleam
@@ -1,7 +1,5 @@
-import gleam/bool
 import gleam/dict
 import gleam/dynamic
-import gleam/function
 import gleam/io
 import gleam/list
 import gleam/result
@@ -108,6 +106,7 @@ pub fn do_main(workbook: Workbook) -> Nil {
       Help(string) -> Ok(string)
     }
   })
+  |> result.map_error(with: snag.new)
   |> result.flatten
   |> end_task
 }
@@ -123,9 +122,7 @@ fn arguments(scope: Scope) -> List(String) {
     start_arguments()
     |> list.filter(keeping: case scope {
       Global -> filter
-      Normal ->
-        filter
-        |> function.compose(bool.negate)
+      Normal -> fn(arg) { !filter(arg) }
     })
   case scope {
     Global -> arguments
diff --git a/src/rad/toml.gleam b/src/rad/toml.gleam
index 2b888a4..df3cd18 100644
--- a/src/rad/toml.gleam
+++ b/src/rad/toml.gleam
@@ -14,8 +14,6 @@ import gleam/string
 import snag.{type Snag}
 @target(erlang)
 import gleam/dict
-@target(erlang)
-import gleam/function
 
 /// A TOML [table](https://toml.io/en/v1.0.0#table) of dynamic data.
 ///
@@ -70,14 +68,11 @@ fn do_decode_every(
 ) -> Result(List(#(String, a)), Snag) {
   use dict <- result.try(
     key_path
-    |> decode(
-      from: toml,
-      expect: dynamic.from
-        |> function.compose(dynamic.dict(
-          of: dynamic.string,
-          to: dynamic.dynamic,
-        )),
-    ),
+    |> decode(from: toml, expect: fn(toml) {
+      toml
+      |> dynamic.from
+      |> dynamic.dict(of: dynamic.string, to: dynamic.dynamic)
+    }),
   )
 
   dict
diff --git a/src/rad/util.gleam b/src/rad/util.gleam
index 8935853..e03b28e 100644
--- a/src/rad/util.gleam
+++ b/src/rad/util.gleam
@@ -405,8 +405,11 @@ pub fn relay_flags(flags: flag.Map) -> List(String) {
     get_fun: fn(Flag) -> snag.Result(List(a)),
     string_fun,
   ) {
-    list.map(_, with: string_fun)
-    |> function.compose(string.join(_, with: ","))
+    fn(flags) {
+      flags
+      |> list.map(with: string_fun)
+      |> string.join(with: ",")
+    }
     |> relay_flag(get_fun, _)
   }
 
@@ -474,7 +477,7 @@ const test_flag = "rad-test"
 ///
 pub fn quiet_or_print(input: CommandInput) -> fn(String) -> Nil {
   case is_test(input) {
-    True -> function.constant(Nil)
+    True -> fn(_) { Nil }
     False -> io.print
   }
 }
@@ -487,7 +490,7 @@ pub fn quiet_or_print(input: CommandInput) -> fn(String) -> Nil {
 ///
 pub fn quiet_or_println(input: CommandInput) -> fn(String) -> Nil {
   case is_test(input) {
-    True -> function.constant(Nil)
+    True -> fn(_) { Nil }
     False -> io.println
   }
 }
diff --git a/src/rad/workbook.gleam b/src/rad/workbook.gleam
index 1359dd9..2cd4703 100644
--- a/src/rad/workbook.gleam
+++ b/src/rad/workbook.gleam
@@ -344,14 +344,14 @@ pub fn info(config: Toml) -> Result {
   let version =
     ["version"]
     |> toml.decode(from: config, expect: dynamic.string)
-    |> result.map(
-      with: string.append(to: "v", suffix: _)
-      |> function.compose(shellout.style(
-        _,
+    |> result.map(with: fn(version) {
+      version
+      |> string.append(to: "v")
+      |> shellout.style(
         with: shellout.display(["italic"]),
         custom: util.lookups,
-      )),
-    )
+      )
+    })
     |> option.from_result
 
   let description =
diff --git a/src/rad/workbook/standard.gleam b/src/rad/workbook/standard.gleam
index 2fbbcb5..4035524 100644
--- a/src/rad/workbook/standard.gleam
+++ b/src/rad/workbook/standard.gleam
@@ -20,7 +20,6 @@
 import gleam
 import gleam/dict
 import gleam/dynamic
-import gleam/function
 import gleam/http.{type Header}
 import gleam/int
 import gleam/io
@@ -750,10 +749,11 @@ pub fn ping(input: CommandInput, _task: Task(Result)) -> Result {
   |> uri.to_string
   |> do_ping([#("cache-control", "no-cache, no-store")])
   |> result.map(with: int.to_string)
-  |> result.map_error(
-    with: int.to_string
-    |> function.compose(snag.new),
-  )
+  |> result.map_error(with: fn(status) {
+    status
+    |> int.to_string
+    |> snag.new
+  })
 }
 
 @target(erlang)
@@ -1028,12 +1028,11 @@ pub fn tree(_input: CommandInput, _task: Task(Result)) -> Result {
       |> shellout.command(run: "tree", in: ".", opt: [])
       |> result.replace_error(snag.layer(error, "command `tree` not found"))
   }
-  |> result.map_error(
-    with: function.compose(
-      snag.layer(_, "failed to find a known tree command"),
-      snag.layer(_, "failed to run task"),
-    ),
-  )
+  |> result.map_error(with: fn(snag) {
+    snag
+    |> snag.layer("failed to find a known tree command")
+    |> snag.layer("failed to run task")
+  })
 }
 
 /// Prints stylized versions for packages found in your project's `gleam.toml`
@@ -1214,12 +1213,11 @@ fn do_watch(input: CommandInput) -> Result {
         "command `inotifywait` not found",
       ))
   }
-  |> result.map_error(
-    with: function.compose(
-      snag.layer(_, "failed to find a known watcher command"),
-      snag.layer(_, "failed to run task"),
-    ),
-  )
+  |> result.map_error(with: fn(snag) {
+    snag
+    |> snag.layer("failed to find a known watcher command")
+    |> snag.layer("failed to run task")
+  })
 }
 
 @target(javascript)
diff --git a/test/rad/task_test.gleam b/test/rad/task_test.gleam
index c1e5b6a..8f67842 100644
--- a/test/rad/task_test.gleam
+++ b/test/rad/task_test.gleam
@@ -1,6 +1,5 @@
 import gleam/dict
 import gleam/dynamic
-import gleam/function
 import gleam/int
 import gleam/list
 import gleam/result
@@ -433,11 +432,11 @@ pub fn trainer_test() {
     |> task.new(run: fn(input, _task) {
       input.args
       |> list.map(with: fn(arg) {
-        let not_oddish =
+        let not_oddish = fn(_) {
           ["not", arg]
           |> string.join(with: " ")
           |> snag.new
-          |> function.constant
+        }
         use maybe_oddish <- result.try(
           arg
           |> int.parse