diff --git a/.github/workflows/host.yml b/.github/workflows/host.yml
new file mode 100644
index 0000000..61f6530
--- /dev/null
+++ b/.github/workflows/host.yml
@@ -0,0 +1,36 @@
+name: python
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+  # Run automatically every monday
+  schedule:
+    - cron: 1 12 * * 1
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 5
+      matrix:
+        python-version:
+        - '3.8'
+        - '3.9'
+        - '3.10'
+        - '3.11'
+        - '3.12'
+
+    name: test (${{ matrix.python-version }})
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up PDM
+      uses: pdm-project/setup-pdm@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        pdm install -G :all
+    - name: Run tests
+      run: pdm run test
diff --git a/apollo_fpga/protocol/jtag_svf.py b/apollo_fpga/protocol/jtag_svf.py
index c5beab8..dd1700e 100644
--- a/apollo_fpga/protocol/jtag_svf.py
+++ b/apollo_fpga/protocol/jtag_svf.py
@@ -127,7 +127,7 @@ def _lex(self):
             else:
                 line, column = self.line_column()
                 print_args = (line, column, self.buffer[self.position:self.position + 16])
-                raise SVFParsingError("unrecognized SVF data at line {}, column {} ({}...)".format(print_args))
+                raise SVFParsingError("unrecognized SVF data at line {}, column {} ({}...)".format(*print_args))
 
     def peek(self):
         """Return the next token without advancing the position."""
diff --git a/pyproject.toml b/pyproject.toml
index 606a271..bf148bd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,6 +32,12 @@ dependencies = [
     "pyxdg>=0.27",
 ]
 
+[project.optional-dependencies]
+py_ci = [
+    "amaranth==0.4.1",
+    "luna-usb @ git+https://github.com/greatscottgadgets/luna@main"
+]
+
 [project.urls]
 repository = "https://github.com/greatscottgadgets/apollo"
 
@@ -41,3 +47,6 @@ include = ["apollo_fpga*"]
 
 [project.scripts]
 apollo = "apollo_fpga.commands.cli:main"
+
+[tool.pdm.scripts]
+test.cmd = "python -m unittest discover -p jtag_svf.py -v"