diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e5ee5d..bf31eba 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## v0.3.1 - 2022-01-29
+
+- Updated for Gleam v0.27.0.
+
 ## v0.3.0 - 2022-01-29
 
 - Converted to use the Gleam build tool.
diff --git a/gleam.toml b/gleam.toml
index a2c1a60..b5fec37 100644
--- a/gleam.toml
+++ b/gleam.toml
@@ -1,5 +1,5 @@
 name = "gleam_crypto"
-version = "0.3.0"
+version = "0.3.1"
 licences = ["Apache-2.0"]
 description = "Gleam bindings to the BEAM cryptography functions"
 
diff --git a/manifest.toml b/manifest.toml
index fb4d29c..0e73893 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -3,8 +3,8 @@
 
 packages = [
   { name = "gleam_bitwise", version = "1.2.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_bitwise", source = "hex", outer_checksum = "6064699EFBABB1CA392DCB193D0E8B402FB042B4B46857B01E6875E643B57F54" },
-  { name = "gleam_stdlib", version = "0.22.3", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "F2C2D389B06426E1289D5419F89BDE8E0F7F35A40B2BBB3C88188481F0D44A9F" },
-  { name = "gleeunit", version = "0.6.2", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "A006864621DB80C4FBB0746580703502FD81A4D38D23FCB20A8120984D353DF0" },
+  { name = "gleam_stdlib", version = "0.27.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "9DBDD21B48C654182CDD8AA15ACF85E8E74A0438583C68BD7EF08BE89F999C6F" },
+  { name = "gleeunit", version = "0.10.1", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "ECEA2DE4BE6528D36AFE74F42A21CDF99966EC36D7F25DEB34D47DD0F7977BAF" },
 ]
 
 [requirements]
diff --git a/src/gleam/crypto.gleam b/src/gleam/crypto.gleam
index 6b90231..9422339 100644
--- a/src/gleam/crypto.gleam
+++ b/src/gleam/crypto.gleam
@@ -4,6 +4,7 @@ import gleam/bit_string
 import gleam/bitwise
 import gleam/string
 import gleam/base
+import gleam/result
 
 /// Generates N bytes randomly uniform 0..255, and returns the result in a binary.
 ///
@@ -109,21 +110,23 @@ pub fn verify_signed_message(
   message: String,
   secret: BitString,
 ) -> Result(BitString, Nil) {
-  try #(protected, payload, signature) = case string.split(message, on: ".") {
+  use #(protected, payload, signature) <- result.then(case
+    string.split(message, on: ".")
+  {
     [a, b, c] -> Ok(#(a, b, c))
     _ -> Error(Nil)
-  }
+  })
   let text = string.concat([protected, ".", payload])
-  try payload = base.url_decode64(payload)
-  try signature = base.url_decode64(signature)
-  try protected = base.url_decode64(protected)
-  try digest_type = case protected {
+  use payload <- result.then(base.url_decode64(payload))
+  use signature <- result.then(base.url_decode64(signature))
+  use protected <- result.then(base.url_decode64(protected))
+  use digest_type <- result.then(case protected {
     <<"HS224":utf8>> -> Ok(Sha224)
     <<"HS256":utf8>> -> Ok(Sha256)
     <<"HS384":utf8>> -> Ok(Sha384)
     <<"HS512":utf8>> -> Ok(Sha512)
     _ -> Error(Nil)
-  }
+  })
   let challenge = hmac(<<text:utf8>>, digest_type, secret)
   case secure_compare(challenge, signature) {
     True -> Ok(payload)