diff --git a/appveyor.yml b/appveyor.yml
index 3fa60721..719b4dce 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -24,7 +24,11 @@ build_script:
   - file jq.exe
   
 test_script:
-  - bash -lc "exec 0</dev/null && cd $APPVEYOR_BUILD_FOLDER && make -j4 'TESTS=tests/mantest tests/jqtest tests/onigtest' check"
+  # tests/optionaltest and tests/shtest fail on Windows; run them
+  # anyways but ignore their failures.  Also, trace shtest.
+  - bash -lc "exec 0</dev/null && cd $APPVEYOR_BUILD_FOLDER && make -j3 'TESTS=tests/mantest tests/jqtest tests/onigtest' check"
+  - bash -lc "exec 0</dev/null && cd $APPVEYOR_BUILD_FOLDER && make TESTS=tests/optionaltest check || cat test-suite.log"
+  - bash -lc "exec 0</dev/null && cd $APPVEYOR_BUILD_FOLDER && make TRACE_TESTS=1 TESTS=tests/shtest check || cat test-suite.log"
       
 artifacts:
   - path: jq-package.zip