diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 12b8f856..8daa482d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,10 @@ on:
     branches:
       - main
 
+  schedule:
+    # run every morning at 10am Pacific Time
+    - cron: '0 17 * * *'
+
 name: ci
 
 env:
@@ -15,7 +19,7 @@ env:
   RUST_BACKTRACE: 1
   # Pin the nightly toolchain to prevent breakage.
   # This should be occasionally updated.
-  RUST_NIGHTLY_TOOLCHAIN: nightly-2023-10-06
+  RUST_NIGHTLY_TOOLCHAIN: nightly-2024-10-07
 
 jobs:
   env:
diff --git a/Cargo.toml b/Cargo.toml
index 1831ff10..e041bc58 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,10 +17,10 @@ fnv = { version = "1", default-features = false }
 glob = "0.3"
 lazy_static = "1"
 pathdiff = "0.2"
-pulldown-cmark = { version = "0.9", default-features = false }
+pulldown-cmark = { version = "0.12", default-features = false }
 rayon = "1"
 regex = "1"
-reqwest = { version = "0.11", features = ["blocking", "native-tls"] }
+reqwest = { version = "0.12", features = ["blocking", "native-tls"] }
 serde = { version = "1", features = ["derive"] }
 slug = { version = "0.1" }
 structopt = "0.3"
diff --git a/rust-toolchain b/rust-toolchain
index 902c7418..dbd41264 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-1.65.0
+1.81.0
diff --git a/src/extract.rs b/src/extract.rs
index e716daac..ae29fd9b 100644
--- a/src/extract.rs
+++ b/src/extract.rs
@@ -124,7 +124,7 @@ fn extract_sections<'a>(spec: &'a Specification) -> Vec<(&'a Section<'a>, Vec<Fe
         .collect()
 }
 
-fn extract_section<'a>(section: &'a Section<'a>) -> (&'a Section<'a>, Vec<Feature>) {
+fn extract_section<'a>(section: &'a Section<'a>) -> (&'a Section<'a>, Vec<Feature<'a>>) {
     let mut features = vec![];
     let lines = &section.lines[..];
 
@@ -204,7 +204,7 @@ pub struct Feature<'a> {
     quote: Vec<&'a str>,
 }
 
-impl<'a> Feature<'a> {
+impl Feature<'_> {
     pub fn should_add(&self) -> bool {
         match self.compound_level() {
             Some(level) => level == self.level,
diff --git a/src/parser.rs b/src/parser.rs
index 74fe8a15..008aa452 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -119,7 +119,7 @@ impl<'a> From<ParsedAnnotation<'a>> for Annotation {
     }
 }
 
-impl<'a> Iterator for Parser<'a> {
+impl Iterator for Parser<'_> {
     type Item = Result<Annotation, Error>;
 
     fn next(&mut self) -> Option<Self::Item> {
diff --git a/src/pattern.rs b/src/pattern.rs
index 8d34aff2..5f56f471 100644
--- a/src/pattern.rs
+++ b/src/pattern.rs
@@ -19,7 +19,7 @@ pub struct Pattern<'a> {
     content: &'a str,
 }
 
-impl<'a> Default for Pattern<'a> {
+impl Default for Pattern<'_> {
     fn default() -> Self {
         Self {
             meta: "//=",
diff --git a/src/report/mod.rs b/src/report/mod.rs
index e56df62b..58d73b8e 100644
--- a/src/report/mod.rs
+++ b/src/report/mod.rs
@@ -72,7 +72,7 @@ enum ReportError<'a> {
     MissingSection { annotation: &'a Annotation },
 }
 
-impl<'a> fmt::Display for ReportError<'a> {
+impl fmt::Display for ReportError<'_> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match self {
             Self::QuoteMismatch { annotation } => write!(
@@ -301,7 +301,7 @@ pub struct TargetReport<'a> {
     statuses: status::StatusMap,
 }
 
-impl<'a> TargetReport<'a> {
+impl TargetReport<'_> {
     #[allow(dead_code)]
     pub fn statistics(&self) -> Statistics {
         let mut stats = Statistics::default();
diff --git a/src/source.rs b/src/source.rs
index 0bbc8fa0..4c6aafc5 100644
--- a/src/source.rs
+++ b/src/source.rs
@@ -17,7 +17,7 @@ pub enum SourceFile<'a> {
     Spec(PathBuf),
 }
 
-impl<'a> SourceFile<'a> {
+impl SourceFile<'_> {
     pub fn annotations(&self) -> Result<AnnotationSet, Error> {
         let mut annotations = AnnotationSet::new();
         match self {
@@ -73,7 +73,7 @@ struct Spec<'a> {
     quote: &'a str,
 }
 
-impl<'a> Spec<'a> {
+impl Spec<'_> {
     fn into_annotation(
         self,
         source: PathBuf,
@@ -119,7 +119,7 @@ struct Exception<'a> {
     reason: String,
 }
 
-impl<'a> Exception<'a> {
+impl Exception<'_> {
     fn into_annotation(
         self,
         source: PathBuf,
@@ -162,7 +162,7 @@ struct Todo<'a> {
     tags: BTreeSet<String>,
 }
 
-impl<'a> Todo<'a> {
+impl Todo<'_> {
     fn into_annotation(
         self,
         source: PathBuf,
diff --git a/src/sourcemap.rs b/src/sourcemap.rs
index b26738c3..1c472262 100644
--- a/src/sourcemap.rs
+++ b/src/sourcemap.rs
@@ -63,13 +63,13 @@ pub struct Str<'a> {
     pub line: usize,
 }
 
-impl<'a> fmt::Display for Str<'a> {
+impl fmt::Display for Str<'_> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         self.value.fmt(f)
     }
 }
 
-impl<'a> Str<'a> {
+impl Str<'_> {
     pub fn indentation(&self) -> usize {
         let trimmed_line = self.trim_start();
         self.len() - trimmed_line.len()
@@ -126,7 +126,7 @@ impl<'a> Str<'a> {
     }
 }
 
-impl<'a> Deref for Str<'a> {
+impl Deref for Str<'_> {
     type Target = str;
 
     fn deref(&self) -> &str {
diff --git a/src/specification/ietf.rs b/src/specification/ietf.rs
index cd79a689..7122d28b 100644
--- a/src/specification/ietf.rs
+++ b/src/specification/ietf.rs
@@ -41,7 +41,7 @@ pub enum ParserState<'a> {
     Section { section: Section<'a>, indent: usize },
 }
 
-impl<'a> Default for ParserState<'a> {
+impl Default for ParserState<'_> {
     fn default() -> Self {
         Self::Init
     }
@@ -105,7 +105,7 @@ impl<'a> Parser<'a> {
                 if let Some(section) = section_header(line) {
                     self.state = ParserState::Section {
                         section,
-                        indent: core::usize::MAX,
+                        indent: usize::MAX,
                     };
                 }
             }
@@ -132,7 +132,7 @@ impl<'a> Parser<'a> {
                         self.on_section(section, indent);
                         self.state = ParserState::Section {
                             section: new_section,
-                            indent: core::usize::MAX,
+                            indent: usize::MAX,
                         };
                     } else {
                         // most likely the footer/header
diff --git a/src/specification/markdown.rs b/src/specification/markdown.rs
index 4805dd64..723337ba 100644
--- a/src/specification/markdown.rs
+++ b/src/specification/markdown.rs
@@ -37,7 +37,7 @@ enum Token<'a> {
 struct Lex<'a> {
     contents: &'a str,
     lines: Peekable<LinesIter<'a>>,
-    cmark: Peekable<pulldown_cmark::OffsetIter<'a, 'a>>,
+    cmark: Peekable<pulldown_cmark::OffsetIter<'a>>,
     next_line: Option<Str<'a>>,
     next_token: Option<Token<'a>>,
 }
@@ -69,7 +69,7 @@ impl<'a> Iterator for Lex<'a> {
     type Item = Token<'a>;
 
     fn next(&mut self) -> Option<Self::Item> {
-        use pulldown_cmark::{Event::*, HeadingLevel::*, Tag::*};
+        use pulldown_cmark::{Event::*, HeadingLevel::*, Tag, TagEnd};
 
         let mut header_buffer = None;
         let mut text_buffer: Option<(usize, Range<usize>)> = None;
@@ -92,11 +92,13 @@ impl<'a> Iterator for Lex<'a> {
             }) {
                 match event {
                     // start buffering the header contents
-                    Start(Heading(_, _, _)) => {
-                        header_buffer = Some((line.line, line.range()));
+                    Start(Tag::Heading { id, .. }) => {
+                        // convert the fragment to a Str
+                        let fragment = id.and_then(|f| line.substr(&f));
+                        header_buffer = Some((line.line, line.range(), fragment));
                     }
                     // we're done parsing the header
-                    End(Heading(level, fragment, _classes)) => {
+                    End(TagEnd::Heading(level)) => {
                         // consume any lines captured by the header
                         while self
                             .lines
@@ -104,8 +106,12 @@ impl<'a> Iterator for Lex<'a> {
                             .is_some()
                         {}
 
+                        let fragment = header_buffer
+                            .as_ref()
+                            .and_then(|(_, _, fragment)| *fragment);
+
                         // convert the header buffer into a Str
-                        let line = if let Some((line_num, mut buf)) = header_buffer {
+                        let line = if let Some((line_num, mut buf, _)) = header_buffer {
                             let r = line.range();
                             buf.start = r.start.min(buf.start);
                             buf.end = r.end.max(buf.end);
@@ -114,9 +120,6 @@ impl<'a> Iterator for Lex<'a> {
                             line
                         };
 
-                        // convert the fragment to a Str
-                        let fragment = fragment.and_then(|f| line.substr(f));
-
                         // convert the text buffer range to a Str
                         let name = if let Some((line_num, mut buf)) = text_buffer {
                             buf.end = line.range().end.max(buf.end);
@@ -142,12 +145,12 @@ impl<'a> Iterator for Lex<'a> {
                         });
                     }
                     // insert a token break before returning the line
-                    Start(Item) => {
+                    Start(Tag::Item) => {
                         self.next_line = Some(line);
                         return Some(Token::Break);
                     }
                     // insert a token break after returning the item line
-                    End(Item) => {
+                    End(TagEnd::Item) => {
                         self.next_token = Some(Token::Break);
                     }
                     // buffer the text if we're parsing a header
@@ -257,7 +260,7 @@ pub enum ParserState<'a> {
     Section { section: Section<'a>, level: u8 },
 }
 
-impl<'a> Default for ParserState<'a> {
+impl Default for ParserState<'_> {
     fn default() -> Self {
         Self::Init
     }
diff --git a/src/specification/mod.rs b/src/specification/mod.rs
index 6363e990..8fcb75e2 100644
--- a/src/specification/mod.rs
+++ b/src/specification/mod.rs
@@ -21,7 +21,7 @@ pub struct Specification<'a> {
     pub format: Format,
 }
 
-impl<'a> fmt::Debug for Specification<'a> {
+impl fmt::Debug for Specification<'_> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         f.debug_struct("Specification")
             .field("title", &self.title)
@@ -149,7 +149,7 @@ pub enum Line<'a> {
     Break,
 }
 
-impl<'a> Line<'a> {
+impl Line<'_> {
     pub fn is_empty(&self) -> bool {
         match self {
             Self::Str(s) => s.is_empty(),
@@ -164,7 +164,7 @@ impl<'a> From<Str<'a>> for Line<'a> {
     }
 }
 
-#[derive(Clone, Debug, Eq, Hash)]
+#[derive(Clone, Debug, Eq)]
 pub struct Section<'a> {
     pub id: String,
     pub title: String,
@@ -172,7 +172,7 @@ pub struct Section<'a> {
     pub lines: Vec<Line<'a>>,
 }
 
-impl<'a> Ord for Section<'a> {
+impl Ord for Section<'_> {
     fn cmp(&self, other: &Self) -> Ordering {
         macro_rules! cmp {
             ($($tt:tt)*) => {
@@ -196,19 +196,28 @@ impl<'a> Ord for Section<'a> {
     }
 }
 
-impl<'a> PartialOrd for Section<'a> {
+impl core::hash::Hash for Section<'_> {
+    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+        self.id.hash(state);
+        self.title.hash(state);
+        self.full_title.hash(state);
+        self.lines.hash(state);
+    }
+}
+
+impl PartialOrd for Section<'_> {
     fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
         Some(self.cmp(other))
     }
 }
 
-impl<'a> PartialEq for Section<'a> {
+impl PartialEq for Section<'_> {
     fn eq(&self, other: &Self) -> bool {
         self.cmp(other) == Ordering::Equal
     }
 }
 
-impl<'a> Section<'a> {
+impl Section<'_> {
     pub fn contents(&self) -> StrView {
         StrView::new(&self.lines)
     }
@@ -276,7 +285,7 @@ pub struct StrRangeIter<'a> {
     end: usize,
 }
 
-impl<'a> Iterator for StrRangeIter<'a> {
+impl Iterator for StrRangeIter<'_> {
     type Item = (usize, Range<usize>);
 
     fn next(&mut self) -> Option<Self::Item> {