diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e0c2d6c..5c34f0a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Install Zig
         uses: mlugg/setup-zig@d1434d08867e3ee9daa34448df10607b98908d29 # 2.2.1
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 5c28782..7491696 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -19,7 +19,7 @@ concurrency:
 jobs:
   build-bundle:
     name: Build package bundle
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     outputs:
       bundle_filename: ${{ steps.bundle.outputs.bundle_filename }}
     defaults:
@@ -79,8 +79,8 @@ jobs:
       fail-fast: false
       matrix:
         os:
-          - ubuntu-24.04
-          - ubuntu-24.04-arm
+          - ubuntu-26.04
+          - ubuntu-26.04-arm
           - macos-26
           - macos-26-intel
           - windows-2025
@@ -118,7 +118,7 @@ jobs:
     needs:
       - build-bundle
       - test-bundle
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     if: github.event_name == 'workflow_dispatch'
     permissions:
       contents: write
diff --git a/examples/headers.roc b/examples/headers.roc
index f5b40a0..1aaad66 100644
--- a/examples/headers.roc
+++ b/examples/headers.roc
@@ -14,7 +14,7 @@ ParsedHeaders : {
 	x_trace_id : Str,
 }
 
-parse_headers : Str -> Try(ParsedHeaders, Encoding.HttpHeader)
+parse_headers : Str -> Try(ParsedHeaders, [BadHeader, MissingRequiredField(Str)])
 parse_headers = |raw| Encoding.HttpHeader.parse(raw)
 
 main! : List(Str) => Try({}, [Exit(I32), StdoutErr(Str), ..])
@@ -46,13 +46,13 @@ expect {
 ## Header parsing reports missing required fields.
 expect
 	match parse_headers("content-length: 42\r\nx-trace-id: demo-123\r\n") {
-		Err(Encoding.HttpHeader.MissingRequired) => Bool.True
+		Err(MissingRequiredField(_)) => Bool.True
 		_ => Bool.False
 	}
 
 ## Header parsing reports invalid field values.
 expect
 	match parse_headers("accept: application/json\r\ncontent-length: nope\r\nx-trace-id: demo-123\r\n") {
-		Err(Encoding.HttpHeader.BadHeader) => Bool.True
+		Err(BadHeader) => Bool.True
 		_ => Bool.False
 	}
diff --git a/examples/router.roc b/examples/router.roc
index 9de1d7c..35841e5 100644
--- a/examples/router.roc
+++ b/examples/router.roc
@@ -31,7 +31,9 @@ JsonOkBody : {
 	ok : Bool,
 }
 
-WidgetRequestError : [BadBodyUtf8, BadBodyJson(Json.ParseErr)]
+JsonParseError : [InvalidJson(Str), MissingRequiredField(Str)]
+
+WidgetRequestError : [BadBodyUtf8, BadBodyJson(JsonParseError)]
 
 body_str : Response -> Str
 body_str = |response| Str.from_utf8(response.body()) ?? "<invalid utf8>"