diff --git a/.github/workflows/build_pycoax.yml b/.github/workflows/build_pycoax.yml
index 6fdd252..3e9053c 100644
--- a/.github/workflows/build_pycoax.yml
+++ b/.github/workflows/build_pycoax.yml
@@ -18,7 +18,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install -r requirements.txt --no-deps
+        pip install -r requirements.txt
       working-directory: ./pycoax
     - name: Run unit tests
       run: ./run_unit_tests.sh
diff --git a/pycoax/requirements.txt b/pycoax/requirements.txt
index 0409260..c343611 100644
--- a/pycoax/requirements.txt
+++ b/pycoax/requirements.txt
@@ -1,2 +1,2 @@
 pyserial==3.4
-sliplib==0.3.0
+sliplib==0.5.0
diff --git a/pycoax/setup.py b/pycoax/setup.py
index 5b4b9fc..1cc3438 100644
--- a/pycoax/setup.py
+++ b/pycoax/setup.py
@@ -21,7 +21,7 @@ setup(
     author='Andrew Kay',
     author_email='projects@ajk.me',
     packages=['coax'],
-    install_requires=['pyserial==3.4', 'sliplib==0.3.0'],
+    install_requires=['pyserial==3.4', 'sliplib==0.5.0'],
     long_description=LONG_DESCRIPTION,
     long_description_content_type='text/markdown',
     classifiers=[