diff --git a/README.md b/README.md
index 2de4d759..796d4835 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# DeepDiff v 4.0.5
+# DeepDiff v 4.0.6
 
 <!-- ![Downloads](https://img.shields.io/pypi/dm/deepdiff.svg?style=flat) -->
 ![Python Versions](https://img.shields.io/pypi/pyversions/deepdiff.svg?style=flat)
@@ -417,6 +417,8 @@ And then running
 
 # ChangeLog
 
+
+- v4-0-6: found a tiny bug in Python formatting of numbers in scientific notation. Added a workaround.
 - v4-0-5: Fixing number diffing. Adding number_format_notation and number_to_string_func.
 - v4-0-4: Adding ignore_string_case and ignore_type_subclasses
 - v4-0-3: Adding versionbump tool for release
diff --git a/deepdiff/__init__.py b/deepdiff/__init__.py
index 99a72d72..03707b99 100644
--- a/deepdiff/__init__.py
+++ b/deepdiff/__init__.py
@@ -1,6 +1,6 @@
 """This module offers the DeepDiff, DeepSearch, grep and DeepHash classes."""
 # flake8: noqa
-__version__ = '4.0.5'
+__version__ = '4.0.6'
 import logging
 
 if __name__ == '__main__':
diff --git a/deepdiff/helper.py b/deepdiff/helper.py
index fdbb2d09..26e64cde 100644
--- a/deepdiff/helper.py
+++ b/deepdiff/helper.py
@@ -241,4 +241,7 @@ def number_to_string(number, significant_digits, number_format_notation="f"):
     # Special case for 0: "-0.00" should compare equal to "0.00"
     if set(result) <= ZERO_DECIMAL_CHARACTERS:
         result = "0.00"
+    # https://bugs.python.org/issue36622
+    if number_format_notation == 'e' and isinstance(number, float):
+        result = result.replace('+0', '+')
     return result
diff --git a/docs/conf.py b/docs/conf.py
index 89db289e..3639e8af 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -60,9 +60,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '4.0.5'
+version = '4.0.6'
 # The full version, including alpha/beta/rc tags.
-release = '4.0.5'
+release = '4.0.6'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/docs/index.rst b/docs/index.rst
index 0b0c325b..e30ba080 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -4,7 +4,7 @@
    contain the root `toctree` directive.
 
 
-DeepDiff 4.0.5 documentation!
+DeepDiff 4.0.6 documentation!
 =============================
 
 **DeepDiff: Deep Difference of dictionaries, iterables, strings and other objects. It will recursively look for all the changes.**
@@ -281,6 +281,7 @@ Indices and tables
 Changelog
 =========
 
+- v4-0-6: found a tiny bug in Python formatting of numbers in scientific notation. Added a workaround.
 - v4-0-5: Fixing number diffing. Adding number_format_notation and number_to_string_func.
 - v4-0-4: Adding ignore_string_case and ignore_type_subclasses
 - v4-0-3: Adding versionbump tool for release
diff --git a/setup.cfg b/setup.cfg
index 1b39b971..08269c06 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 4.0.5
+current_version = 4.0.6
 commit = True
 tag = True
 tag_name = {new_version}
diff --git a/setup.py b/setup.py
index ecabde8d..b3ed8079 100755
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,7 @@
 if os.environ.get('USER', '') == 'vagrant':
     del os.link
 
-version = '4.0.5'
+version = '4.0.6'
 
 
 def get_reqs(filename):
diff --git a/tests/test_diff_text.py b/tests/test_diff_text.py
index 9028389f..06e7acc2 100755
--- a/tests/test_diff_text.py
+++ b/tests/test_diff_text.py
@@ -1313,14 +1313,16 @@ def test_int_to_unicode(self):
         }
         assert result == ddiff
 
-    @pytest.mark.parametrize("t1, t2, significant_digits, number_format_notation, result", [
-        (Decimal('2.5'), Decimal('1.5'), 0, "f", {}),
-        (Decimal('2.5'), Decimal('1.5'), 1, "f", {'values_changed': {'root': {'new_value': Decimal('1.5'), 'old_value': Decimal('2.5')}}}),
-        (Decimal('2.5'), Decimal(2.5), 3, "f", {}),
-        (1024, 1022, 2, "e", {}),
+    @pytest.mark.parametrize("t1, t2, ignore_numeric_type_changes, significant_digits, number_format_notation, result", [
+        (Decimal('2.5'), Decimal('1.5'), False, 0, "f", {}),
+        (Decimal('2.5'), Decimal('1.5'), False, 1, "f", {'values_changed': {'root': {'new_value': Decimal('1.5'), 'old_value': Decimal('2.5')}}}),
+        (Decimal('2.5'), Decimal(2.5), False, 3, "f", {}),
+        (1024, 1022, False, 2, "e", {}),
+        ({"key": [Decimal('2.0001'), Decimal('20000.0001')]}, {"key": [2.0002, 20000.0002]}, True, 4, "e", {'values_changed': {"root['key'][0]": {'new_value': 2.0002, 'old_value': Decimal('2.0001')}}})
     ])
-    def test_significant_digits_and_notation(self, t1, t2, significant_digits, number_format_notation, result):
-        ddiff = DeepDiff(t1, t2, significant_digits=significant_digits, number_format_notation=number_format_notation)
+    def test_significant_digits_and_notation(self, t1, t2, ignore_numeric_type_changes, significant_digits, number_format_notation, result):
+        ddiff = DeepDiff(t1, t2, significant_digits=significant_digits, number_format_notation=number_format_notation,
+                         ignore_numeric_type_changes=ignore_numeric_type_changes)
         assert result == ddiff
 
     def test_significant_digits_for_complex_imaginary_part(self):