diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 403ec44c8..8481b962a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -9,11 +9,11 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
         with:
-          python-version: "3.10"
-      - uses: actions/cache@v2
+          python-version: 3.x
+      - uses: actions/cache@v3
         with:
           path: ~/.cache/pip
           key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}
diff --git a/.github/workflows/directory_writer.yml b/.github/workflows/directory_writer.yml
index be8154a32..331962cef 100644
--- a/.github/workflows/directory_writer.yml
+++ b/.github/workflows/directory_writer.yml
@@ -6,8 +6,10 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1  # v1, NOT v2
-      - uses: actions/setup-python@v2
+      - uses: actions/checkout@v1  # v1, NOT v2 or v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: 3.x
       - name: Write DIRECTORY.md
         run: |
           scripts/build_directory_md.py 2>&1 | tee DIRECTORY.md
diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index de73c96ad..3b128bc54 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -6,17 +6,17 @@ jobs:
   pre-commit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/cache@v2
+      - uses: actions/checkout@v3
+      - uses: actions/cache@v3
         with:
           path: |
             ~/.cache/pre-commit
             ~/.cache/pip
           key: ${{ runner.os }}-pre-commit-${{ hashFiles('.pre-commit-config.yaml') }}
-      - uses: actions/setup-python@v2
+      - uses: actions/setup-python@v4
         with:
-          python-version: "3.10"
-      - uses: psf/black@21.4b0
+          python-version: 3.x
+      # - uses: psf/black@22.6.0
       - name: Install pre-commit
         run: |
           python -m pip install --upgrade pip
diff --git a/.github/workflows/project_euler.yml b/.github/workflows/project_euler.yml
index 995295fca..460938219 100644
--- a/.github/workflows/project_euler.yml
+++ b/.github/workflows/project_euler.yml
@@ -14,8 +14,10 @@ jobs:
   project-euler:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: 3.x
       - name: Install pytest and pytest-cov
         run: |
           python -m pip install --upgrade pip
@@ -24,8 +26,10 @@ jobs:
   validate-solutions:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: 3.x
       - name: Install pytest and requests
         run: |
           python -m pip install --upgrade pip
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 33da02fb7..90feb50ff 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.1.0
+    rev: v4.3.0
     hooks:
       - id: check-executables-have-shebangs
       - id: check-yaml
@@ -14,7 +14,7 @@ repos:
       - id: requirements-txt-fixer
 
   - repo: https://github.com/psf/black
-    rev: 22.3.0
+    rev: 22.6.0
     hooks:
       - id: black
 
@@ -26,7 +26,7 @@ repos:
           - --profile=black
 
   - repo: https://github.com/asottile/pyupgrade
-    rev: v2.31.0
+    rev: v2.34.0
     hooks:
       - id: pyupgrade
         args:
@@ -42,7 +42,7 @@ repos:
           - --max-line-length=88
 
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v0.931
+    rev: v0.961
     hooks:
       - id: mypy
         args:
diff --git a/DIRECTORY.md b/DIRECTORY.md
index d30e275d0..2e9c03cbc 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -444,7 +444,6 @@
   * [Scoring Functions](machine_learning/scoring_functions.py)
   * [Sequential Minimum Optimization](machine_learning/sequential_minimum_optimization.py)
   * [Similarity Search](machine_learning/similarity_search.py)
-  * [Support Vector Machines](machine_learning/support_vector_machines.py)
   * [Word Frequency Functions](machine_learning/word_frequency_functions.py)
 
 ## Maths
@@ -910,6 +909,7 @@
 
 ## Scheduling
   * [First Come First Served](scheduling/first_come_first_served.py)
+  * [Highest Response Ratio Next](scheduling/highest_response_ratio_next.py)
   * [Multi Level Feedback Queue](scheduling/multi_level_feedback_queue.py)
   * [Non Preemptive Shortest Job First](scheduling/non_preemptive_shortest_job_first.py)
   * [Round Robin](scheduling/round_robin.py)
@@ -995,6 +995,7 @@
   * [Credit Card Validator](strings/credit_card_validator.py)
   * [Detecting English Programmatically](strings/detecting_english_programmatically.py)
   * [Frequency Finder](strings/frequency_finder.py)
+  * [Hamming Distance](strings/hamming_distance.py)
   * [Indian Phone Validator](strings/indian_phone_validator.py)
   * [Is Contains Unique Chars](strings/is_contains_unique_chars.py)
   * [Is Palindrome](strings/is_palindrome.py)
@@ -1016,6 +1017,7 @@
   * [Reverse Words](strings/reverse_words.py)
   * [Split](strings/split.py)
   * [Upper](strings/upper.py)
+  * [Wave](strings/wave.py)
   * [Wildcard Pattern Matching](strings/wildcard_pattern_matching.py)
   * [Word Occurrence](strings/word_occurrence.py)
   * [Word Patterns](strings/word_patterns.py)