diff --git a/Jenkinsfile b/Jenkinsfile
index 538968e..b344c28 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -29,7 +29,7 @@
                         echo "Building for Windows"
                         pwsh "python .\\build.py"
                         echo "Testing for Windows"
-                        pwsh ".\\env.ps1; dobuild; dotest_ci"
+                        pwsh ".\\env.ps1; dobuild; dotest_ci; domut_ci"
                         pwsh "mv NewLang.pyz NewLang.windows.pyz"
                         archiveArtifacts artifacts: 'NewLang.windows.pyz', fingerprint: true
                         cleanWs()
diff --git a/env.ps1 b/env.ps1
index 255f57e..9ed5515 100644
--- a/env.ps1
+++ b/env.ps1
@@ -36,5 +36,7 @@
 Function Global:dotest_ci { pytest -q -n auto --hypothesis-profile=ci }
 Function Global:dotest_long { pytest -q -n 4 --hypothesis-profile=long }
 Function Global:docheck { dotidy && dolint && dotest }
-Function Global:domut { mutmut run --paths-to-mutate "src/syntax.py src/tokenize.py src/parse.py" }
+Function _domut { mutmut run --paths-to-mutate "src/syntax.py src/tokenize.py src/parse.py" $args }
+Function Global:domut { _domut }
+Function Global:domut_ci { _domut --no-progress | Select-String -Not "Running\.\.\.$" }
 Function Global:dobuild { python build.py }