diff --git a/DIRECTORY.md b/DIRECTORY.md
index 2f828aa51..01667c9fe 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -419,6 +419,7 @@
   * [Koch Snowflake](fractals/koch_snowflake.py)
   * [Mandelbrot](fractals/mandelbrot.py)
   * [Sierpinski Triangle](fractals/sierpinski_triangle.py)
+  * [Vicsek](fractals/vicsek.py)
 
 ## Fuzzy Logic
   * [Fuzzy Operations](fuzzy_logic/fuzzy_operations.py)
@@ -678,6 +679,7 @@
     * [Newton Forward Interpolation](maths/numerical_analysis/newton_forward_interpolation.py)
     * [Newton Raphson](maths/numerical_analysis/newton_raphson.py)
     * [Numerical Integration](maths/numerical_analysis/numerical_integration.py)
+    * [Proper Fractions](maths/numerical_analysis/proper_fractions.py)
     * [Runge Kutta](maths/numerical_analysis/runge_kutta.py)
     * [Runge Kutta Fehlberg 45](maths/numerical_analysis/runge_kutta_fehlberg_45.py)
     * [Runge Kutta Gills](maths/numerical_analysis/runge_kutta_gills.py)
diff --git a/other/gauss_easter.py b/other/gauss_easter.py
index d1c525593..7ccea7f5b 100644
--- a/other/gauss_easter.py
+++ b/other/gauss_easter.py
@@ -3,7 +3,7 @@ https://en.wikipedia.org/wiki/Computus#Gauss'_Easter_algorithm
 """
 
 import math
-from datetime import datetime, timedelta
+from datetime import UTC, datetime, timedelta
 
 
 def gauss_easter(year: int) -> datetime:
@@ -11,16 +11,16 @@ def gauss_easter(year: int) -> datetime:
     Calculation Gregorian easter date for given year
 
     >>> gauss_easter(2007)
-    datetime.datetime(2007, 4, 8, 0, 0)
+    datetime.datetime(2007, 4, 8, 0, 0, tzinfo=datetime.timezone.utc)
 
     >>> gauss_easter(2008)
-    datetime.datetime(2008, 3, 23, 0, 0)
+    datetime.datetime(2008, 3, 23, 0, 0, tzinfo=datetime.timezone.utc)
 
     >>> gauss_easter(2020)
-    datetime.datetime(2020, 4, 12, 0, 0)
+    datetime.datetime(2020, 4, 12, 0, 0, tzinfo=datetime.timezone.utc)
 
     >>> gauss_easter(2021)
-    datetime.datetime(2021, 4, 4, 0, 0)
+    datetime.datetime(2021, 4, 4, 0, 0, tzinfo=datetime.timezone.utc)
     """
     metonic_cycle = year % 19
     julian_leap_year = year % 4
@@ -45,11 +45,11 @@ def gauss_easter(year: int) -> datetime:
     ) % 7
 
     if days_to_add == 29 and days_from_phm_to_sunday == 6:
-        return datetime(year, 4, 19)
+        return datetime(year, 4, 19, tzinfo=UTC)
     elif days_to_add == 28 and days_from_phm_to_sunday == 6:
-        return datetime(year, 4, 18)
+        return datetime(year, 4, 18, tzinfo=UTC)
     else:
-        return datetime(year, 3, 22) + timedelta(
+        return datetime(year, 3, 22, tzinfo=UTC) + timedelta(
             days=int(days_to_add + days_from_phm_to_sunday)
         )
 
diff --git a/pyproject.toml b/pyproject.toml
index a69ab7aa6..09093433a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,7 +2,6 @@
 lint.ignore = [    # `ruff rule S101` for a description of that rule
   "B904",     # Within an `except` clause, raise exceptions with `raise ... from err` -- FIX ME
   "B905",     # `zip()` without an explicit `strict=` parameter -- FIX ME
-  "DTZ001",   # The use of `datetime.datetime()` without `tzinfo` argument is not allowed -- FIX ME
   "DTZ005",   # The use of `datetime.datetime.now()` without `tzinfo` argument is not allowed -- FIX ME
   "E741",     # Ambiguous variable name 'l' -- FIX ME
   "EM101",    # Exception must not use a string literal, assign to variable first