diff --git a/.github/scripts/generate_job_matrix.py b/.github/scripts/generate_job_matrix.py
index a610921..b2c5509 100755
--- a/.github/scripts/generate_job_matrix.py
+++ b/.github/scripts/generate_job_matrix.py
@@ -11,6 +11,11 @@ examples = [
     "hello-a"
 ]
 
+non_preemptible = [
+    "litex",
+    "litex_linux"
+]
+
 jobs = []
 
 osvers = [
@@ -29,14 +34,16 @@ for osver in osvers:
         'fpga-fam': "xc7",
         'os': osver[0],
         'os-version': osver[1],
-        'example': example
+        'example': example,
+        'preemptible': str(example not in non_preemptible).lower(),
     } for example in examples]
 
 jobs += [{
     'fpga-fam': "eos-s3",
     'os': osver[0],
     'os-version': osver[1],
-    'example': "counter"
+    'example': "counter",
+    'preemptible': str(True).lower(),
 } for osver in osvers]
 
 print('::set-output name=matrix::' + str(jobs))
diff --git a/.github/workflows/sphinx-tuttest.yml b/.github/workflows/sphinx-tuttest.yml
index de0c2ed..6685caf 100644
--- a/.github/workflows/sphinx-tuttest.yml
+++ b/.github/workflows/sphinx-tuttest.yml
@@ -35,6 +35,7 @@ jobs:
     env:
       LANG: "en_US.UTF-8"
       DEBIAN_FRONTEND: "noninteractive"
+      GHA_PREEMPTIBLE: ${{ matrix.preemptible }}
 
     container: ${{matrix.os}}:${{matrix.os-version}}