diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 2a6cdc6b..224343eb 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     steps:
     - uses: actions/checkout@v2
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 6ed6d6ea..da6d7d4e 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     steps:
     - uses: actions/checkout@v2
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index a0631101..80238925 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -9,7 +9,7 @@ jobs:
       max-parallel: 4
       matrix:
         python-version: ["3.6", "3.7", "3.8", "3.9", "3.10", "pypy3"]
-        os: [ubuntu-latest, windows-latest]
+        os: [ubuntu-20.04, windows-latest]
         exclude:
           - os: windows-latest
             python-version: "3.6"
@@ -38,7 +38,7 @@ jobs:
           TOXENV: ${{ matrix.toxenv }}
 
   single_extra:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       fail-fast: false
       matrix:
@@ -58,7 +58,7 @@ jobs:
         run: pytest tests --${{ matrix.dependency }}-only
 
   coverage:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     steps:
       - uses: actions/checkout@v2
diff --git a/gql/__version__.py b/gql/__version__.py
index 903a158a..a5cfdf59 100644
--- a/gql/__version__.py
+++ b/gql/__version__.py
@@ -1 +1 @@
-__version__ = "3.4.0"
+__version__ = "3.4.1"
diff --git a/setup.py b/setup.py
index 835f8abc..3ba4662d 100644
--- a/setup.py
+++ b/setup.py
@@ -44,7 +44,7 @@
 install_requests_requires = [
     "requests>=2.26,<3",
     "requests_toolbelt>=0.9.1,<1",
-    "urllib3>=1.26",
+    "urllib3>=1.26,<2",
 ]
 
 install_websockets_requires = [