diff --git a/Library/Homebrew/dev-cmd/contributions.rb b/Library/Homebrew/dev-cmd/contributions.rb
index d7fbf333f0..e6df85892b 100755
--- a/Library/Homebrew/dev-cmd/contributions.rb
+++ b/Library/Homebrew/dev-cmd/contributions.rb
@@ -108,7 +108,7 @@ module Homebrew
   sig { params(totals: Hash).returns(String) }
   def generate_maintainers_csv(totals)
     CSV.generate do |csv|
-      csv << %w[user repo commits coauthorships reviews total]
+      csv << %w[user repo author committer coauthorships reviews total]
 
       totals.sort_by { |_, v| -v.values.sum }.each do |user, total|
         csv << grand_total_row(user, total)
@@ -119,12 +119,13 @@ module Homebrew
   sig { params(user: String, results: Hash, grand_total: Hash).returns(String) }
   def generate_csv(user, results, grand_total)
     CSV.generate do |csv|
-      csv << %w[user repo commits coauthorships reviews total]
+      csv << %w[user repo author committer coauthorships reviews total]
       results.each do |repo, counts|
         csv << [
           user,
           repo,
-          counts[:commits],
+          counts[:author],
+          counts[:committer],
           counts[:coauthorships],
           counts[:reviews],
           counts.values.sum,
@@ -139,7 +140,8 @@ module Homebrew
     [
       user,
       "all",
-      grand_total[:commits],
+      grand_total[:author],
+      grand_total[:committer],
       grand_total[:coauthorships],
       grand_total[:reviews],
       grand_total.values.sum,
@@ -170,7 +172,8 @@ module Homebrew
       puts "Determining contributions for #{person} on #{repo_full_name}..." if args.verbose?
 
       data[repo] = {
-        commits:       GitHub.repo_commit_count_for_user(repo_full_name, person, args),
+        author:        GitHub.repo_commit_count_for_user(repo_full_name, person, "author", args),
+        committer:     GitHub.repo_commit_count_for_user(repo_full_name, person, "committer", args),
         coauthorships: git_log_trailers_cmd(T.must(repo_path), person, "Co-authored-by", args),
         reviews:       GitHub.count_issues(
           "",
@@ -188,7 +191,7 @@ module Homebrew
 
   sig { params(results: Hash).returns(Hash) }
   def total(results)
-    totals = { commits: 0, coauthorships: 0, reviews: 0 }
+    totals = { author: 0, committer: 0, coauthorships: 0, reviews: 0 }
 
     # {
     #   "brew"=>{:commits=>9,:coauthorships=>6,:reviews=>1},
diff --git a/Library/Homebrew/utils/github.rb b/Library/Homebrew/utils/github.rb
index 6e04b3548d..d4bf5b7027 100644
--- a/Library/Homebrew/utils/github.rb
+++ b/Library/Homebrew/utils/github.rb
@@ -717,10 +717,10 @@ module GitHub
     output[/^Status: (200)/, 1] != "200"
   end
 
-  def repo_commit_count_for_user(nwo, user, args)
+  def repo_commit_count_for_user(nwo, user, filter, args)
     return if Homebrew::EnvConfig.no_github_api?
 
-    params = ["author=#{user}"]
+    params = ["#{filter}=#{user}"]
     params << "since=#{DateTime.parse(args.from).iso8601}" if args.from
     params << "until=#{DateTime.parse(args.to).iso8601}" if args.to