diff --git a/CHANGELOG.md b/CHANGELOG.md
index 766ed6a8..1020c101 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,15 +5,25 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-
 ## Unreleased
 
-[Compare with 0.6.0](https://github.com/edgedb/edgedb-elixir/compare/v0.6.0...HEAD)
+[Compare with 0.6.1](https://github.com/edgedb/edgedb-elixir/compare/v0.6.1...HEAD)
+
+## [0.6.1] - 2023-07-07
+
+[Compare with 0.6.0](https://github.com/edgedb/edgedb-elixir/compare/v0.6.0...v0.6.1)
 
 ### Added
 
 - support for `Elixir v1.15` and `Erlang/OTP 26`.
 
+### Fixed
+
+- encoding of `t:EdgeDB.Range.t/0` values.
+- constructing `t:EdgeDB.Range.t/0` from `EdgeDB.Range.new/3` with `nil` as values.
+- examples in the documentation and the `Inspect` implementation of
+    `t:EdgeDB.DateDuration.t/0` and `t:EdgeDB.Range.t/0`.
+
 ## [0.6.0] - 2023-06-22
 
 [Compare with 0.5.1](https://github.com/edgedb/edgedb-elixir/compare/v0.5.1...v0.6.0)
diff --git a/lib/edgedb/protocol/codecs/range.ex b/lib/edgedb/protocol/codecs/range.ex
index 8931c60e..71bb005a 100644
--- a/lib/edgedb/protocol/codecs/range.ex
+++ b/lib/edgedb/protocol/codecs/range.ex
@@ -33,12 +33,17 @@ defimpl EdgeDB.Protocol.Codec, for: EdgeDB.Protocol.Codecs.Range do
     codec = CodecStorage.get(codec_storage, codec)
     flags = encode_range_flags(range)
 
-    data = [
-      Codec.encode(codec, range.lower, codec_storage),
-      Codec.encode(codec, range.upper, codec_storage)
-    ]
-
-    [<<IO.iodata_length(data)::uint32(), flags::uint8()>> | data]
+    data =
+      Enum.reject(
+        [
+          <<flags::uint8()>>,
+          range.lower && Codec.encode(codec, range.lower, codec_storage),
+          range.upper && Codec.encode(codec, range.upper, codec_storage)
+        ],
+        &is_nil/1
+      )
+
+    [<<IO.iodata_length(data)::uint32()>> | data]
   end
 
   @impl Codec
@@ -115,6 +120,9 @@ defimpl EdgeDB.Protocol.Codec, for: EdgeDB.Protocol.Codecs.Range do
 
         range.inc_lower ->
           Bitwise.bor(flags, @lb_inc)
+
+        true ->
+          flags
       end
 
     cond do
@@ -123,6 +131,9 @@ defimpl EdgeDB.Protocol.Codec, for: EdgeDB.Protocol.Codecs.Range do
 
       range.inc_upper ->
         Bitwise.bor(flags, @ub_inc)
+
+      true ->
+        flags
     end
   end
 end
diff --git a/lib/edgedb/types/date_duration.ex b/lib/edgedb/types/date_duration.ex
index d98f9aa1..58e1b7dd 100644
--- a/lib/edgedb/types/date_duration.ex
+++ b/lib/edgedb/types/date_duration.ex
@@ -6,7 +6,7 @@ defmodule EdgeDB.DateDuration do
   ```elixir
   iex(1)> {:ok, client} = EdgeDB.start_link()
   iex(2)> EdgeDB.query_required_single!(client, "select <cal::date_duration>'1 year 2 days'")
-  #EdgeDB.Duration<"P1Y20D">
+  #EdgeDB.DateDuration<"P1Y2D">
   ```
   """
 
@@ -33,12 +33,12 @@ defimpl Inspect, for: EdgeDB.DateDuration do
 
   @impl Inspect
   def inspect(%EdgeDB.DateDuration{days: 0, months: 0}, _opts) do
-    concat(["#EdgeDB.RelativeDuration<\"", "P0D", "\">"])
+    concat(["#EdgeDB.DateDuration<\"", "P0D", "\">"])
   end
 
   @impl Inspect
   def inspect(%EdgeDB.DateDuration{} = duration, _opts) do
-    concat(["#EdgeDB.RelativeDuration<\"", format_date("P", duration), "\">"])
+    concat(["#EdgeDB.DateDuration<\"", format_date("P", duration), "\">"])
   end
 
   defp format_date(formatted_repr, %EdgeDB.DateDuration{} = duration) do
diff --git a/lib/edgedb/types/range.ex b/lib/edgedb/types/range.ex
index 786b1049..7c5f54e3 100644
--- a/lib/edgedb/types/range.ex
+++ b/lib/edgedb/types/range.ex
@@ -18,8 +18,20 @@ defmodule EdgeDB.Range do
     is_empty: false
   ]
 
+  @typedoc since: "0.6.1"
   @typedoc """
-  A value representing some interval of values.
+  A type that is acceptable by EdgeDB ranges.
+  """
+  @type value() ::
+          integer()
+          | float()
+          | Decimal.t()
+          | DateTime.t()
+          | NaiveDateTime.t()
+          | Date.t()
+
+  @typedoc """
+  A value of `t:value/0` type representing some interval of values.
 
   Fields:
 
@@ -38,9 +50,9 @@ defmodule EdgeDB.Range do
         }
 
   @typedoc """
-  A value representing some interval of values.
+  A value of `t:value/0` type representing some interval of values.
   """
-  @type t() :: t(term())
+  @type t() :: t(value())
 
   @typedoc """
   Options for `EdgeDB.Range.new/3` function.
@@ -66,7 +78,7 @@ defmodule EdgeDB.Range do
   """
   @spec empty() :: t()
   def empty do
-    new(nil, nil, empty: true, inc_lower: false)
+    new(nil, nil, empty: true)
   end
 
   @doc """
@@ -77,19 +89,38 @@ defmodule EdgeDB.Range do
   #EdgeDB.Range<[1.1, 3.3]>
   ```
   """
-  @spec new(value, value, list(creation_option())) :: t(value) when value: term()
+  @spec new(value | nil, value | nil, list(creation_option())) :: t(value) when value: value()
   def new(lower, upper, opts \\ []) do
+    empty? = Keyword.get(opts, :empty, false)
     inc_lower? = Keyword.get(opts, :inc_lower, true)
     inc_upper? = Keyword.get(opts, :inc_upper, false)
-    empty? = Keyword.get(opts, :empty, false)
 
-    %__MODULE__{
-      lower: lower,
-      upper: upper,
-      inc_lower: inc_lower?,
-      inc_upper: inc_upper?,
-      is_empty: empty?
-    }
+    cond do
+      empty? and (not is_nil(lower) or not is_nil(upper)) ->
+        raise EdgeDB.InvalidArgumentError.new(
+                "conflicting arguments to construct range: " <>
+                  ":empty is `true` while the specified bounds " <>
+                  "suggest otherwise"
+              )
+
+      empty? ->
+        %__MODULE__{
+          lower: nil,
+          upper: nil,
+          inc_lower: false,
+          inc_upper: false,
+          is_empty: true
+        }
+
+      true ->
+        %__MODULE__{
+          lower: lower,
+          upper: upper,
+          inc_lower: not is_nil(lower) and inc_lower?,
+          inc_upper: not is_nil(upper) and inc_upper?,
+          is_empty: false
+        }
+    end
   end
 end
 
@@ -107,7 +138,7 @@ defimpl Inspect, for: EdgeDB.Range do
       "#EdgeDB.Range<",
       if(range.inc_lower, do: "[", else: "("),
       if(range.lower, do: Inspect.inspect(range.lower, opts), else: empty()),
-      ",",
+      ", ",
       if(range.upper, do: Inspect.inspect(range.upper, opts), else: empty()),
       if(range.inc_upper, do: "]", else: ")"),
       ">"
diff --git a/mix.exs b/mix.exs
index 1187c62d..1f1f2cad 100644
--- a/mix.exs
+++ b/mix.exs
@@ -2,7 +2,7 @@ defmodule EdgeDB.MixProject do
   use Mix.Project
 
   @app :edgedb
-  @version "0.6.0"
+  @version "0.6.1"
   @source_url "https://github.com/edgedb/edgedb-elixir"
   @description "EdgeDB client for Elixir"
 
diff --git a/test/docs/docs_test.exs b/test/docs/docs_test.exs
index f234940a..b951c5b7 100644
--- a/test/docs/docs_test.exs
+++ b/test/docs/docs_test.exs
@@ -19,6 +19,12 @@ defmodule Tests.DocsTest do
   doctest EdgeDB.RelativeDuration
   doctest EdgeDB.Set
 
+  skip_before(version: 2)
+  doctest EdgeDB.DateDuration
+
+  skip_before(version: 2)
+  doctest EdgeDB.Range
+
   defp drop_tickets(client) do
     EdgeDB.query!(client, "delete Ticket")
 
diff --git a/test/edgedb/protocol/codecs/range_test.exs b/test/edgedb/protocol/codecs/range_test.exs
index 97ffc2a2..0e7b0328 100644
--- a/test/edgedb/protocol/codecs/range_test.exs
+++ b/test/edgedb/protocol/codecs/range_test.exs
@@ -4,12 +4,66 @@ defmodule Tests.EdgeDB.Protocol.Codecs.RangeTest do
   skip_before(version: 2, scope: :module)
 
   @input_ranges %{
+    "range<int32>" => [
+      EdgeDB.Range.new(1, 2),
+      {EdgeDB.Range.new(1, 2, inc_upper: true), EdgeDB.Range.new(1, 3)},
+      EdgeDB.Range.empty(),
+      {EdgeDB.Range.new(1, 1), EdgeDB.Range.empty()},
+      EdgeDB.Range.new(nil, nil)
+    ],
     "range<int64>" => [
-      EdgeDB.Range.new(1, 2, inc_lower: true, inc_upper: false),
-      {EdgeDB.Range.new(1, 2, inc_lower: true, inc_upper: true),
-       EdgeDB.Range.new(1, 3, inc_lower: true, inc_upper: false)},
+      EdgeDB.Range.new(1, 2),
+      {EdgeDB.Range.new(1, 2, inc_upper: true), EdgeDB.Range.new(1, 3)},
+      EdgeDB.Range.empty(),
+      {EdgeDB.Range.new(1, 1), EdgeDB.Range.empty()},
+      EdgeDB.Range.new(nil, nil)
+    ],
+    "range<float32>" => [
+      EdgeDB.Range.new(1.5, 2.5),
+      {EdgeDB.Range.new(1.5, 2.5, inc_upper: true), EdgeDB.Range.new(1.5, 2.5, inc_upper: true)},
+      EdgeDB.Range.empty(),
+      {EdgeDB.Range.new(1.5, 1.5), EdgeDB.Range.empty()},
+      EdgeDB.Range.new(nil, nil)
+    ],
+    "range<float64>" => [
+      EdgeDB.Range.new(1.5, 2.5),
+      {EdgeDB.Range.new(1.5, 2.5, inc_upper: true), EdgeDB.Range.new(1.5, 2.5, inc_upper: true)},
+      EdgeDB.Range.empty(),
+      {EdgeDB.Range.new(1.5, 1.5), EdgeDB.Range.empty()},
+      EdgeDB.Range.new(nil, nil)
+    ],
+    "range<decimal>" => [
+      EdgeDB.Range.new(Decimal.new(1), Decimal.new(2)),
+      {EdgeDB.Range.new(Decimal.new(1), Decimal.new(2), inc_upper: true),
+       EdgeDB.Range.new(Decimal.new(1), Decimal.new(2), inc_upper: true)},
+      EdgeDB.Range.empty(),
+      {EdgeDB.Range.new(Decimal.new(1), Decimal.new(1)), EdgeDB.Range.empty()},
+      EdgeDB.Range.new(nil, nil)
+    ],
+    "range<datetime>" => [
+      EdgeDB.Range.new(~U[2022-07-01 00:00:00Z], ~U[2022-12-01 00:00:00Z]),
+      {EdgeDB.Range.new(~U[2022-07-01 00:00:00Z], ~U[2022-12-01 00:00:00Z], inc_upper: true),
+       EdgeDB.Range.new(~U[2022-07-01 00:00:00Z], ~U[2022-12-01 00:00:00Z], inc_upper: true)},
+      EdgeDB.Range.empty(),
+      {EdgeDB.Range.new(~U[2022-07-01 00:00:00Z], ~U[2022-07-01 00:00:00Z]),
+       EdgeDB.Range.empty()},
+      EdgeDB.Range.new(nil, nil)
+    ],
+    "range<cal::local_datetime>" => [
+      EdgeDB.Range.new(~N[2022-07-01 00:00:00Z], ~N[2022-12-01 00:00:00Z]),
+      {EdgeDB.Range.new(~N[2022-07-01 00:00:00Z], ~N[2022-12-01 00:00:00Z], inc_upper: true),
+       EdgeDB.Range.new(~N[2022-07-01 00:00:00Z], ~N[2022-12-01 00:00:00Z], inc_upper: true)},
+      EdgeDB.Range.empty(),
+      {EdgeDB.Range.new(~N[2022-07-01 00:00:00Z], ~N[2022-07-01 00:00:00Z]),
+       EdgeDB.Range.empty()},
+      EdgeDB.Range.new(nil, nil)
+    ],
+    "range<cal::local_date>" => [
+      EdgeDB.Range.new(~D[2022-07-01], ~D[2022-12-01]),
+      {EdgeDB.Range.new(~D[2022-07-01], ~D[2022-12-01], inc_upper: true),
+       EdgeDB.Range.new(~D[2022-07-01], ~D[2022-12-02])},
       EdgeDB.Range.empty(),
-      {EdgeDB.Range.new(1, 1, inc_lower: true, inc_upper: false), EdgeDB.Range.empty()},
+      {EdgeDB.Range.new(~D[2022-07-01], ~D[2022-07-01]), EdgeDB.Range.empty()},
       EdgeDB.Range.new(nil, nil)
     ]
   }
@@ -73,10 +127,12 @@ defmodule Tests.EdgeDB.Protocol.Codecs.RangeTest do
             {value, value}
         end
 
-      test "encoding #{inspect(input)} as #{inspect(type)} with expecting #{inspect(output)} in the end",
+      test "encoding #{inspect(input)} as #{inspect(type)} with expecting #{inspect(output)} as the result",
            %{client: client} do
-        value = "value"
-        assert ^value = EdgeDB.query_single!(client, "select <short_str>$0", [value])
+        type = unquote(type)
+        input = unquote(Macro.escape(input))
+        output = unquote(Macro.escape(output))
+        assert ^output = EdgeDB.query_single!(client, "select <#{type}>$0", [input])
       end
     end
   end