diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 60b05a7..1ace411 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -42,7 +42,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v5.3.0
         with:
           python-version: '3.8'
           
diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
index 1c6d3bf..9ffd588 100644
--- a/.github/workflows/pull-request.yml
+++ b/.github/workflows/pull-request.yml
@@ -16,10 +16,10 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ '3.8', '3.9', '3.10', '3.11' ]
+        python-version: [ '3.8', '3.9', '3.10', '3.11', '3.12', '3.13' ]
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5.3.0
         with:
           python-version: ${{ matrix.python-version }}
       - run: make install-dev
@@ -29,10 +29,10 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ '3.8', '3.9', '3.10', '3.11' ]
+        python-version: [ '3.8', '3.9', '3.10', '3.11', '3.12', '3.13' ]
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5.3.0
         with:
           python-version: ${{ matrix.python-version }}
       - run: make install-dev
@@ -42,10 +42,10 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ '3.8', '3.9', '3.10', '3.11' ]
+        python-version: [ '3.8', '3.9', '3.10', '3.11', '3.12', '3.13' ]
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5.3.0
         with:
           python-version: ${{ matrix.python-version }}
       - run: make install-dev
@@ -55,7 +55,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5.3.0
         with:
           python-version: 3.11
       - run: pip install safety==2.3.5
diff --git a/fastapi_versionizer/versionizer.py b/fastapi_versionizer/versionizer.py
index 639b633..e3c6c8f 100644
--- a/fastapi_versionizer/versionizer.py
+++ b/fastapi_versionizer/versionizer.py
@@ -342,11 +342,13 @@ def _add_route_to_router(
                     return router.add_api_websocket_route(**kwargs)
             except TypeError as e:
                 e_str = str(e)
-                key_start = e_str.index("'") + 1
-                key_end = e_str.rindex("'")
-                kwargs.pop(e_str[key_start:key_end])
+                error_parts = e_str.split("'")
+                if len(error_parts) < 2:
+                    raise RuntimeError(f'unknown type error: {e_str}')
+                key_to_remove = error_parts[1]
+                kwargs.pop(key_to_remove)
 
-        raise Exception('Failed to add route')
+        raise RuntimeError('Failed to add route')
 
     def _strip_routes(self) -> None:
         paths_to_keep = []
diff --git a/requirements.dev.txt b/requirements.dev.txt
index 357588b..2e3dda3 100644
--- a/requirements.dev.txt
+++ b/requirements.dev.txt
@@ -7,13 +7,12 @@ flake8-eradicate==1.4.0
 flake8-length==0.3.1
 flake8-quotes==3.3.2
 flake8-use-fstring==1.4
-pytest==7.0.1
+pytest==8.3.4
 mypy==1.4.1
 pre-commit==2.21.0
-pytest==7.0.1
-pytest-cov==4.1.0
+pytest-cov==5.0.0
 safety==2.3.5
 twine==3.8.0
 types-setuptools==65.6.0.2
-httpx==0.22.0
+httpx==0.28.1
 uvicorn==0.16.0
diff --git a/setup.py b/setup.py
index 30bf688..454df82 100644
--- a/setup.py
+++ b/setup.py
@@ -31,7 +31,9 @@
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
-        'Programming Language :: Python :: 3.11'
+        'Programming Language :: Python :: 3.11',
+        'Programming Language :: Python :: 3.12',
+        'Programming Language :: Python :: 3.13'
     ],
     install_requires=requirements_list,
     python_requires='>=3.8'