diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index c98c4a6..9a75e5c 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -8,7 +8,7 @@
 
 # Configuration parameters: AllowedMethods, AllowedPatterns, CountRepeatedAttributes.
 Metrics/AbcSize:
-  Max: 73
+  Max: 71
 
 # Configuration parameters: CountComments, CountAsOne, AllowedMethods, AllowedPatterns, inherit_mode.
 # AllowedMethods: refine
@@ -17,11 +17,11 @@ Metrics/BlockLength:
 
 # Configuration parameters: AllowedMethods, AllowedPatterns.
 Metrics/CyclomaticComplexity:
-  Max: 21
+  Max: 20
 
 # Configuration parameters: CountComments, CountAsOne, AllowedMethods, AllowedPatterns.
 Metrics/MethodLength:
-  Max: 62
+  Max: 60
 
 # Configuration parameters: CountComments, CountAsOne.
 Metrics/ModuleLength:
@@ -33,7 +33,7 @@ Metrics/ParameterLists:
 
 # Configuration parameters: AllowedMethods, AllowedPatterns.
 Metrics/PerceivedComplexity:
-  Max: 26
+  Max: 25
 
 # Configuration parameters: MinNameLength, AllowNamesEndingInNumbers, AllowedNames, ForbiddenNames.
 # AllowedNames: as, at, by, cc, db, id, if, in, io, ip, of, on, os, pp, to
diff --git a/lib/chrono_model/conversions.rb b/lib/chrono_model/conversions.rb
index 4e01ff6..fb97063 100644
--- a/lib/chrono_model/conversions.rb
+++ b/lib/chrono_model/conversions.rb
@@ -6,19 +6,6 @@ module Conversions
 
     ISO_DATETIME = /\A(\d{4})-(\d\d)-(\d\d) (\d\d):(\d\d):(\d\d)(?:\.(\d+))?\z/
 
-    # rubocop:disable Style/PerlBackrefs
-    def string_to_utc_time(string)
-      return string if string.is_a?(Time)
-
-      return unless string =~ ISO_DATETIME
-
-      # .1 is .100000, not .000001
-      usec = $7.ljust(6, '0') unless $7.nil?
-
-      Time.utc $1.to_i, $2.to_i, $3.to_i, $4.to_i, $5.to_i, $6.to_i, usec.to_i
-    end
-    # rubocop:enable Style/PerlBackrefs
-
     def time_to_utc_string(time)
       time.to_fs(:db) << '.' << format('%06d', time.usec)
     end
diff --git a/lib/chrono_model/time_machine/timeline.rb b/lib/chrono_model/time_machine/timeline.rb
index b53f7e1..30daaf2 100644
--- a/lib/chrono_model/time_machine/timeline.rb
+++ b/lib/chrono_model/time_machine/timeline.rb
@@ -81,9 +81,7 @@ def timeline(record = nil, options = {})
         sql << " LIMIT #{options[:limit].to_i}" if options.key?(:limit)
 
         connection.on_schema(Adapter::HISTORY_SCHEMA) do
-          connection.select_values(sql, "#{name} periods").map! do |ts|
-            Conversions.string_to_utc_time ts
-          end
+          connection.select_values(sql, "#{name} periods")
         end
       end
 
diff --git a/spec/chrono_model/conversions_spec.rb b/spec/chrono_model/conversions_spec.rb
index 5b9e763..88c433f 100644
--- a/spec/chrono_model/conversions_spec.rb
+++ b/spec/chrono_model/conversions_spec.rb
@@ -3,43 +3,6 @@
 require 'spec_helper'
 
 RSpec.describe ChronoModel::Conversions do
-  describe '.string_to_utc_time' do
-    subject(:string_to_utc_time) { described_class.string_to_utc_time(string) }
-
-    context 'with a valid UTC time string' do
-      let(:string) { '2017-02-06 09:46:31.129626' }
-
-      it { is_expected.to be_a(Time) }
-      it { expect(string_to_utc_time.year).to  eq 2017 }
-      it { expect(string_to_utc_time.month).to eq 2 }
-      it { expect(string_to_utc_time.day).to   eq 6 }
-      it { expect(string_to_utc_time.hour).to  eq 9 }
-      it { expect(string_to_utc_time.min).to   eq 46 }
-      it { expect(string_to_utc_time.sec).to   eq 31 }
-      it { expect(string_to_utc_time.usec).to  eq 129_626 } # Ref Issue #32
-    end
-
-    context 'with a valid UTC string without least significant zeros' do
-      let(:string) { '2017-02-06 09:46:31.129' }
-
-      it { is_expected.to be_a(Time) }
-      it { expect(string_to_utc_time.usec).to eq 129_000 } # Ref Issue #32
-    end
-
-    context 'with a valid UTC string without usec' do
-      let(:string) { '2017-02-06 09:46:31' }
-
-      it { is_expected.to be_a(Time) }
-      it { expect(string_to_utc_time.usec).to eq 0 }
-    end
-
-    context 'with an invalid UTC time string' do
-      let(:string) { 'foobar' }
-
-      it { is_expected.to be_nil }
-    end
-  end
-
   describe '.time_to_utc_string' do
     subject { described_class.time_to_utc_string(time) }