diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 5b347773..fdb427e3 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -25,9 +25,8 @@ jobs:
         tarantool:
           - '1.10'
           - '2.8'
-          - '2.x-latest'
+          - '2.10'
         python:
-          - '3.5'
           - '3.6'
           - '3.7'
           - '3.8'
@@ -53,40 +52,29 @@ jobs:
             msgpack-deps: 'msgpack==0.6.2'
           - tarantool: '2.8'
             python: '3.10'
-            msgpack-deps: 'msgpack==1.0.0'
+            msgpack-deps: 'msgpack==1.0.4'
 
     steps:
       - name: Clone the connector
         uses: actions/checkout@v2
 
       - name: Install tarantool ${{ matrix.tarantool }}
-        if: matrix.tarantool != '2.x-latest'
         uses: tarantool/setup-tarantool@v1
         with:
           tarantool-version: ${{ matrix.tarantool }}
 
-      - name: Install latest tarantool 2.x
-        if: matrix.tarantool == '2.x-latest'
-        run: |
-          curl -L https://tarantool.io/pre-release/2/installer.sh | sudo bash
-          sudo apt install -y tarantool tarantool-dev
-
       - name: Setup Python for tests
         uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python }}
 
       - name: Install specific version of msgpack package
-        if: startsWith(matrix.msgpack-deps, 'msgpack==') == true
-        run: |
-          pip install ${{ matrix.msgpack-deps }}
-
-      - name: Install specific version of msgpack-python package
-        # msgpack package is a replacement for deprecated msgpack-python.
-        # To test compatibility with msgpack-python we must ignore
-        # requirements.txt install of msgpack package by overwriting it
-        # with sed.
-        if: startsWith(matrix.msgpack-deps, 'msgpack-python==') == true
+        # We want to enforce using modern msgpack since it has
+        # various vulnerability fixes. But the code is compatible
+        # with older msgpack versions and msgpack-python package.
+        # To this test compatibility we must ignore requirements.txt
+        # install of the newer msgpack package by overwriting it with sed.
+        if: matrix.msgpack-deps != ''
         run: |
           pip install ${{ matrix.msgpack-deps }}
           sed -i -e "s/^msgpack.*$/${{ matrix.msgpack-deps }}/" requirements.txt
@@ -122,10 +110,7 @@ jobs:
           - '1.10.11-0-gf0b0e7ecf-r470'
           - '2.8.3-21-g7d35cd2be-r470'
           - '2.10.0-1-gfa775b383-r486-linux-x86_64'
-        python: ['3.5', '3.6', '3.7', '3.8', '3.9', '3.10']
-        msgpack-deps:
-          # latest msgpack will be installed as a part of requirements.txt
-          - ''
+        python: ['3.6', '3.7', '3.8', '3.9', '3.10']
 
     steps:
       - name: Clone the connector
@@ -150,21 +135,6 @@ jobs:
         with:
           python-version: ${{ matrix.python }}
 
-      - name: Install specific version of msgpack package
-        if: startsWith(matrix.msgpack-deps, 'msgpack==') == true
-        run: |
-          pip install ${{ matrix.msgpack-deps }}
-
-      - name: Install specific version of msgpack-python package
-        # msgpack package is a replacement for deprecated msgpack-python.
-        # To test compatibility with msgpack-python we must ignore
-        # requirements.txt install of msgpack package by overwriting it
-        # with sed.
-        if: startsWith(matrix.msgpack-deps, 'msgpack-python==') == true
-        run: |
-          pip install ${{ matrix.msgpack-deps }}
-          sed -i -e "s/^msgpack.*$/${{ matrix.msgpack-deps }}/" requirements.txt
-
       - name: Install package requirements
         run: pip install -r requirements.txt
 
@@ -196,6 +166,7 @@ jobs:
         tarantool:
           - '1.10'
           - '2.8'
+          - '2.10.0.g0a5ce0b9c-1'
         python:
           - '3.10'
 
@@ -219,12 +190,20 @@ jobs:
         with:
           distribution: Ubuntu-20.04
 
-      - name: Install tarantool ${{ matrix.tarantool }} for WSL
+      - name: Install tarantool ${{ matrix.tarantool }} for WSL (2.8 and older)
+        if: (matrix.tarantool == '1.10') || (matrix.tarantool == '2.8')
         shell: wsl-bash_Ubuntu-20.04 {0}
         run: |
           curl -L https://tarantool.io/installer.sh | VER=${{ matrix.tarantool }} bash -s -- --type "release"
           sudo apt install -y tarantool tarantool-dev
 
+      - name: Install tarantool ${{ matrix.tarantool }} for WSL (2.10 and newer)
+        if: (matrix.tarantool != '1.10') && (matrix.tarantool != '2.8')
+        shell: wsl-bash_Ubuntu-20.04 {0}
+        run: |
+          curl -L https://tarantool.io/release/2/installer.sh | bash -s
+          sudo apt install -y tarantool=${{ matrix.tarantool }} tarantool-dev=${{ matrix.tarantool }}
+
       - name: Setup test tarantool instance
         shell: wsl-bash_Ubuntu-20.04 {0}
         run: |
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ad8892e5..c09eea66 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 ### Changed
+- Bump msgpack requirement to 1.0.4 (PR #223).
+  The only reason of this bump is various vulnerability fixes,
+  msgpack>=0.4.0 and msgpack-python==0.4.0 are still supported.
 
 ### Fixed
 
diff --git a/requirements-test.txt b/requirements-test.txt
index 5a825685..7cc39625 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,4 +1,2 @@
 dbapi-compliance==1.15.0
-# Use this pyyaml version to be compatible with Python34-x64 on Windows.
-# See for more details http://help.appveyor.com/discussions/problems/28023.
-pyyaml==5.2b1
+pyyaml==6.0
diff --git a/requirements.txt b/requirements.txt
index 14261dfd..46dff380 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1 @@
-msgpack>=0.4.0
+msgpack>=1.0.4
diff --git a/setup.py b/setup.py
index c57573d5..7d84f4fd 100755
--- a/setup.py
+++ b/setup.py
@@ -83,7 +83,7 @@ def find_version(*file_paths):
     cmdclass=cmdclass,
     command_options=command_options,
     install_requires=[
-        'msgpack>=0.4.0',
+        'msgpack>=1.0.4',
     ],
     python_requires='>=3',
 )