diff --git a/CHANGELOG.md b/CHANGELOG.md
index ebc68b09a..8141c8fa0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,9 +3,9 @@
 Diffs are now displayed with unchanged lines aligned to the other side.
 
 Improved Rust parsing to recognise lifetime syntax `'foo`, character
-literals `'x'` and sequences of punctuation.
+literals `'x'` and punctuation.
 
-Improve punctuation parsing for OCaml and JS.
+Improved punctuation parsing for OCaml and JS.
 
 Fixed an issue where the diff calculated may not be minimal.
 
diff --git a/config/syntax.toml b/config/syntax.toml
index 61037eb56..3052d89c4 100644
--- a/config/syntax.toml
+++ b/config/syntax.toml
@@ -156,7 +156,9 @@ atom_patterns = [
   "'[a-z_]+",
   # Symbols (e.g. variable names)
   '[a-zA-Z0-9_]+!?',
-  # Operators
+  # Two character operators
+  '(::|&&|\|\|)',
+  # Single character operators
   # | is a delimiter for lambdas, but also used in pattern matching.
   '[.&=<>/*+:;,|#!?-]',
 ]