diff --git a/Makefile b/Makefile
index 270ab0f00..b2f631874 100644
--- a/Makefile
+++ b/Makefile
@@ -36,7 +36,8 @@ bootstrap: tools/nuget.exe
 
 # run targets
 
-export POWERSHELL=env TEMP=/tmp LD_LIBRARY_PATH=$(MONAD)/lib:$(PSLIB) PSMODULEPATH=$(PSLIB)/Modules $(MONAD)/bin/powershell $(PSLIB)/powershell.exe
+export POWERSHELL_HOST=env TEMP=/tmp LD_LIBRARY_PATH=$(MONAD)/lib:$(PSLIB) PSMODULEPATH=$(PSLIB)/Modules $(MONAD)/bin/powershell
+export POWERSHELL=$(POWERSHELL_HOST) $(PSLIB)/powershell.exe
 
 demo:
 	$(POWERSHELL) '"a","b","c","a","a" | Select-Object -Unique'
diff --git a/src/monad-build b/src/monad-build
index 6ed63339e..254d126dd 160000
--- a/src/monad-build
+++ b/src/monad-build
@@ -1 +1 @@
-Subproject commit 6ed63339e8c6f8d66fb66b37ffde4e86aed07d0b
+Subproject commit 254d126ddb2c7306d185030d7f837aa6fb27c9ff
diff --git a/src/xunit-tests/xunit-tests.mk b/src/xunit-tests/xunit-tests.mk
new file mode 100644
index 000000000..73d12d752
--- /dev/null
+++ b/src/xunit-tests/xunit-tests.mk
@@ -0,0 +1,12 @@
+# xUnit tests for PowerShell
+# - results in xunit-tests.xml
+# - see https://xunit.github.io/
+TEST_FOLDER=$(MONAD)/src/xunit-tests
+TEST_SRCS=$(TEST_FOLDER)/test_*.cs
+TEST_TARGETS=$(addprefix $(PSLIB)/, System.Management.Automation.dll Microsoft.PowerShell.Commands.Management.dll)
+
+$(PSLIB)/PowerShell.Linux.Test.dll: $(TEST_SRCS) $(TEST_TARGETS)
+	$(CSC) $(CSCOPTS_LIB) -out:$@ $(addprefix -r:$(MONAD_EXT)/xunit/, xunit.core.dll xunit.assert.dll) $(addprefix -r:, $(TEST_TARGETS)) $(COREREF) $(TEST_SRCS)
+
+test: $(PSLIB)/PowerShell.Linux.Test.dll
+	$(POWERSHELL_HOST) $(PSLIB)/xunit.console.netcore.exe $< -xml $(MONAD)/xunit-tests.xml