diff --git a/CHANGELOG.md b/CHANGELOG.md
index 79038dd07..644c0fef2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -31,6 +31,8 @@
 
 ### Fixed
 
+- [#777](https://github.com/airblade/paper_trail/issues/777) -
+  Support HMT associations with `:source` option.
 - [#731](https://github.com/airblade/paper_trail/pull/731) -
   Map enums to database values before storing in `object_changes` column.
 - [#715](https://github.com/airblade/paper_trail/issues/715) -
diff --git a/lib/paper_trail/reifier.rb b/lib/paper_trail/reifier.rb
index 7d3edbc3c..473da1580 100644
--- a/lib/paper_trail/reifier.rb
+++ b/lib/paper_trail/reifier.rb
@@ -255,7 +255,7 @@ def reify_has_many_through(transaction_id, associations, model, options = {})
             }
           else
             collection_keys = through_collection.map { |through_model|
-              through_model.send(assoc.association_foreign_key)
+              through_model.send(assoc.source_reflection.foreign_key)
             }
 
             version_id_subquery = assoc.klass.paper_trail_version_class.
diff --git a/test/dummy/app/models/authorship.rb b/test/dummy/app/models/authorship.rb
index ea16d84a2..fc5afa103 100644
--- a/test/dummy/app/models/authorship.rb
+++ b/test/dummy/app/models/authorship.rb
@@ -1,5 +1,5 @@
 class Authorship < ActiveRecord::Base
   belongs_to :book
-  belongs_to :person
+  belongs_to :author, class_name: "Person"
   has_paper_trail
 end
diff --git a/test/dummy/app/models/book.rb b/test/dummy/app/models/book.rb
index f35d21baa..96ab910cc 100644
--- a/test/dummy/app/models/book.rb
+++ b/test/dummy/app/models/book.rb
@@ -1,6 +1,6 @@
 class Book < ActiveRecord::Base
   has_many :authorships, dependent: :destroy
-  has_many :authors, through: :authorships, source: :person
+  has_many :authors, through: :authorships
 
   has_many :editorships, dependent: :destroy
   has_many :editors, through: :editorships
diff --git a/test/dummy/app/models/person.rb b/test/dummy/app/models/person.rb
index 45938261a..4a9ef1ea5 100644
--- a/test/dummy/app/models/person.rb
+++ b/test/dummy/app/models/person.rb
@@ -1,5 +1,5 @@
 class Person < ActiveRecord::Base
-  has_many :authorships, dependent: :destroy
+  has_many :authorships, foreign_key: :author_id, dependent: :destroy
   has_many :books, through: :authorships
   has_paper_trail
 
diff --git a/test/dummy/db/migrate/20110208155312_set_up_test_tables.rb b/test/dummy/db/migrate/20110208155312_set_up_test_tables.rb
index 28f7faf9c..76f2bc0f9 100644
--- a/test/dummy/db/migrate/20110208155312_set_up_test_tables.rb
+++ b/test/dummy/db/migrate/20110208155312_set_up_test_tables.rb
@@ -138,7 +138,7 @@ def up
 
     create_table :authorships, force: true do |t|
       t.integer :book_id
-      t.integer :person_id
+      t.integer :author_id
     end
 
     create_table :people, force: true do |t|
diff --git a/test/dummy/db/schema.rb b/test/dummy/db/schema.rb
index cc16254d1..f0a5a8d2c 100644
--- a/test/dummy/db/schema.rb
+++ b/test/dummy/db/schema.rb
@@ -27,7 +27,7 @@
 
   create_table "authorships", force: :cascade do |t|
     t.integer "book_id"
-    t.integer "person_id"
+    t.integer "author_id"
   end
 
   create_table "banana_versions", force: :cascade do |t|
diff --git a/test/unit/associations_test.rb b/test/unit/associations_test.rb
index 91c6a9e75..6de9daf5b 100644
--- a/test/unit/associations_test.rb
+++ b/test/unit/associations_test.rb
@@ -523,7 +523,7 @@ class AssociationsTest < ActiveSupport::TestCase
             should "mark the newly associated-through for destruction" do
               assert @book_0.
                 authorships.
-                detect { |as| as.person.name == "author_1" }.
+                detect { |as| as.author.name == "author_1" }.
                 marked_for_destruction?
             end
           end
@@ -564,7 +564,7 @@ class AssociationsTest < ActiveSupport::TestCase
             should "mark the newly associated-through for destruction" do
               assert @book_0.
                 authorships.
-                detect { |as| as.person.name == "person_existing" }.
+                detect { |as| as.author.name == "person_existing" }.
                 marked_for_destruction?
             end
           end
diff --git a/test/unit/model_test.rb b/test/unit/model_test.rb
index 728ee4aeb..acf8bc1b8 100644
--- a/test/unit/model_test.rb
+++ b/test/unit/model_test.rb
@@ -1025,7 +1025,7 @@ class HasPaperTrailModelTest < ActiveSupport::TestCase
       @book.authorships.reload.last.destroy
       assert_equal 1, PaperTrail::Version.count - count
       assert_equal @book, PaperTrail::Version.last.reify.book
-      assert_equal @dostoyevsky, PaperTrail::Version.last.reify.person
+      assert_equal @dostoyevsky, PaperTrail::Version.last.reify.author
     end
 
     should "store version on join clear" do
@@ -1034,7 +1034,7 @@ class HasPaperTrailModelTest < ActiveSupport::TestCase
       @book.authorships.reload.destroy_all
       assert_equal 1, PaperTrail::Version.count - count
       assert_equal @book, PaperTrail::Version.last.reify.book
-      assert_equal @dostoyevsky, PaperTrail::Version.last.reify.person
+      assert_equal @dostoyevsky, PaperTrail::Version.last.reify.author
     end
   end