diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index b2dbd60faf..d8eb86fe84 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -149,7 +149,7 @@ jobs:
         timeout-minutes: 15
         run: |
           PATH=/usr/bin
-          export TFLAGS='-j8 ${{ matrix.tflags }} ~615'
+          export TFLAGS='-j8 ${{ matrix.tflags }}'
           if [ -x "$(cygpath "${SYSTEMROOT}/System32/curl.exe")" ]; then
             TFLAGS+=" -ac $(cygpath "${SYSTEMROOT}/System32/curl.exe")"
           fi
diff --git a/tests/libtest/test613.pl b/tests/libtest/test613.pl
index 3bcd32aa44..2d4f390f77 100755
--- a/tests/libtest/test613.pl
+++ b/tests/libtest/test613.pl
@@ -66,6 +66,9 @@ if ($ARGV[0] eq "prepare")
     # represented exactly on a FAT filesystem.
     utime time, timegm(0,0,12,31,11,100), "rofile.txt";
     chmod 0444, "rofile.txt";
+    if($^O eq 'cygwin') {
+      system "chattr +r rofile.txt";
+    }
 
     exit 0;
 }
@@ -75,6 +78,9 @@ elsif ($ARGV[0] eq "postprocess")
     my $logfile = $ARGV[2];
 
     # Clean up the test directory
+    if($^O eq 'cygwin') {
+      system "chattr -r $dirname/rofile.txt";
+    }
     chmod 0666, "$dirname/rofile.txt";
     unlink "$dirname/rofile.txt";
     unlink "$dirname/plainfile.txt";