diff --git a/Contributing.md b/Contributing.md
index fdf0f9a..611cffc 100644
--- a/Contributing.md
+++ b/Contributing.md
@@ -41,7 +41,7 @@ will permit you to do:
 $ bundle install
 ```
 
-to get the development dependencies. If you aleady have `hoe` installed, you
+to get the development dependencies. If you already have `hoe` installed, you
 can accomplish the same thing with:
 
 ```sh
@@ -106,6 +106,7 @@ Thanks to everyone else who has contributed code or bug reports to Diff::LCS:
 - Myron Marston
 - Nicolas Leger
 - Oleg Orlov
+- Patrick Linnane
 - Paul Kunysch
 - Pete Higgins
 - Peter Goldstein
diff --git a/History.md b/History.md
index 89a9b36..92bfe60 100644
--- a/History.md
+++ b/History.md
@@ -2,6 +2,8 @@
 
 ## NEXT / YYYY-MM-DD
 
+- Patrick Linnane fixed various minor typos. [#93][]
+
 - Mark Young added a Changelog link to the RubyGems metadata. [#92][]
 
 ## 1.5.1 / 2024-01-31
@@ -427,6 +429,7 @@
 [#90]: https://github.com/halostatue/diff-lcs/pull/90
 [#91]: https://github.com/halostatue/diff-lcs/issues/91
 [#92]: https://github.com/halostatue/diff-lcs/pull/92
+[#93]: https://github.com/halostatue/diff-lcs/pull/93
 [rspec/rspec-expectations#200]: https://github.com/rspec/rspec-expectations/pull/200
 [rspec/rspec-expectations#219]: https://github.com/rspec/rspec-expectations/issues/219
 [rspec/rspec-expectations#238]: https://github.com/rspec/rspec-expectations/issues/238
diff --git a/lib/diff/lcs.rb b/lib/diff/lcs.rb
index 302fcd3..bdf0805 100644
--- a/lib/diff/lcs.rb
+++ b/lib/diff/lcs.rb
@@ -256,7 +256,7 @@ def sdiff(seq1, seq2, callbacks = nil, &block) # :yields: diff changes
   #
   # The methods for <tt>callbacks#match</tt>, <tt>callbacks#discard_a</tt>, and
   # <tt>callbacks#discard_b</tt> are invoked with an event comprising the
-  # action ("=", "+", or "-", respectively), the indicies +i+ and +j+, and the
+  # action ("=", "+", or "-", respectively), the indexes +i+ and +j+, and the
   # elements <tt>A[i]</tt> and <tt>B[j]</tt>. Return values are discarded by
   # #traverse_sequences.
   #
@@ -465,7 +465,7 @@ def traverse_sequences(seq1, seq2, callbacks = Diff::LCS::SequenceCallbacks) # :
   # The methods for <tt>callbacks#match</tt>, <tt>callbacks#discard_a</tt>,
   # <tt>callbacks#discard_b</tt>, and <tt>callbacks#change</tt> are invoked
   # with an event comprising the action ("=", "+", "-", or "!", respectively),
-  # the indicies +i+ and +j+, and the elements <tt>A[i]</tt> and <tt>B[j]</tt>.
+  # the indexes +i+ and +j+, and the elements <tt>A[i]</tt> and <tt>B[j]</tt>.
   # Return values are discarded by #traverse_balanced.
   #
   # === Context
@@ -482,7 +482,7 @@ def traverse_balanced(seq1, seq2, callbacks = Diff::LCS::BalancedCallbacks)
 
     # Process all the lines in the match vector.
     loop do
-      # Find next match indices +ma+ and +mb+
+      # Find next match indexes +ma+ and +mb+
       loop do
         ma += 1
         break unless ma < matches.size && matches[ma].nil?