diff --git a/History.md b/History.md
index 1353e74a..9bbbedb4 100644
--- a/History.md
+++ b/History.md
@@ -1,13 +1,16 @@
 # Liquid Change Log
 
-## 5.0.2 (unreleased)
+## 5.1.0 / 2021-09-09
 
 ### Features
 * Add `remove_last`, and `replace_last` filters (#1422) [Anders Hagbard]
 * Add `base64_encode`, `base64_decode`, `base64_url_safe_encode`, and `base64_url_safe_decode` filters (#1450) [Daniel Insley]
+* Introduce `to_liquid_value` in `Liquid::Drop` (#1441) [Michael Go]
 
 ### Fixes
 * Fix support for using a String subclass for the liquid source (#1421) [Dylan Thacker-Smith]
+* Add `ParseTreeVisitor` to `RangeLookup` (#1470) [CP Clermont]
+* Translate `RangeError` to `Liquid::Error` for `truncatewords` with large int (#1431) [Dylan Thacker-Smith]
 
 ## 5.0.1 / 2021-03-24
 
diff --git a/lib/liquid/condition.rb b/lib/liquid/condition.rb
index 3dd433d6..786f9bc9 100644
--- a/lib/liquid/condition.rb
+++ b/lib/liquid/condition.rb
@@ -8,7 +8,7 @@ module Liquid
   #   c = Condition.new(1, '==', 1)
   #   c.evaluate #=> true
   #
-  class Condition #:nodoc:
+  class Condition # :nodoc:
     @@operators = {
       '==' => ->(cond, left, right) {  cond.send(:equal_variables, left, right) },
       '!=' => ->(cond, left, right) { !cond.send(:equal_variables, left, right) },
diff --git a/lib/liquid/context.rb b/lib/liquid/context.rb
index 605fddec..3d6ffc96 100644
--- a/lib/liquid/context.rb
+++ b/lib/liquid/context.rb
@@ -124,7 +124,7 @@ module Liquid
     #      context['var'] = 'hi'
     #   end
     #
-    #   context['var]  #=> nil
+    #   context['var']  #=> nil
     def stack(new_scope = {})
       push(new_scope)
       yield
diff --git a/lib/liquid/range_lookup.rb b/lib/liquid/range_lookup.rb
index 57bccd00..7e159be6 100644
--- a/lib/liquid/range_lookup.rb
+++ b/lib/liquid/range_lookup.rb
@@ -12,6 +12,8 @@ module Liquid
       end
     end
 
+    attr_reader :start_obj, :end_obj
+
     def initialize(start_obj, end_obj)
       @start_obj = start_obj
       @end_obj   = end_obj
@@ -35,5 +37,11 @@ module Liquid
         Utils.to_integer(input)
       end
     end
+
+    class ParseTreeVisitor < Liquid::ParseTreeVisitor
+      def children
+        [@node.start_obj, @node.end_obj]
+      end
+    end
   end
 end
diff --git a/lib/liquid/version.rb b/lib/liquid/version.rb
index 724bca4c..93388f2f 100644
--- a/lib/liquid/version.rb
+++ b/lib/liquid/version.rb
@@ -2,5 +2,5 @@
 # frozen_string_literal: true
 
 module Liquid
-  VERSION = "5.0.2.alpha"
+  VERSION = "5.1.0"
 end
diff --git a/test/integration/standard_filter_test.rb b/test/integration/standard_filter_test.rb
index fc112b46..0b68482d 100644
--- a/test/integration/standard_filter_test.rb
+++ b/test/integration/standard_filter_test.rb
@@ -790,6 +790,18 @@ class StandardFiltersTest < Minitest::Test
     assert_equal(expectation, @filters.where(input, "ok"))
   end
 
+  def test_where_string_keys
+    input = [
+      "alpha", "beta", "gamma", "delta"
+    ]
+
+    expectation = [
+      "beta",
+    ]
+
+    assert_equal(expectation, @filters.where(input, "be"))
+  end
+
   def test_where_no_key_set
     input = [
       { "handle" => "alpha", "ok" => true },
diff --git a/test/unit/parse_tree_visitor_test.rb b/test/unit/parse_tree_visitor_test.rb
index 2c085b38..c3e74487 100644
--- a/test/unit/parse_tree_visitor_test.rb
+++ b/test/unit/parse_tree_visitor_test.rb
@@ -159,6 +159,13 @@ class ParseTreeVisitorTest < Minitest::Test
     )
   end
 
+  def test_for_range
+    assert_equal(
+      ["test"],
+      visit(%({% for x in (1..test) %}{% endfor %}))
+    )
+  end
+
   def test_tablerow_in
     assert_equal(
       ["test"],