diff --git a/makeclass b/makeclass
index 28d1223b4dc1890740fc7e5af92d5506b6f71df3..79374fe5565ae5d2bfbfed09f5653293bd9a50d6 100755
--- a/makeclass
+++ b/makeclass
@@ -8,6 +8,7 @@ use strict;
 
 sub transmogrify($);
 sub cleanup(@);
+sub setmtime($$);
 
 my $CLASSDIR = "class";
 
@@ -19,15 +20,20 @@ my @others = ("syllabus", "schedule");
 @lecturenotes = cleanup(@lecturenotes);
 
 foreach my $file (@handouts, @lecturenotes) {
-    my $command = "cp $file $CLASSDIR/" . transmogrify($file);
+    my $destfile = $CLASSDIR . "/" . transmogrify($file);
+    my $command = "cp $file $destfile";
     print "$command\n";
     system "$command";
+    setmtime($destfile,$file);
 }
 
 foreach my $file (@others) {
-    my $command = "cp $file/$file.pdf $CLASSDIR/$file.pdf";
+    my $sourcefile = $file . "/" . $file . ".pdf";
+    my $destfile = $CLASSDIR . "/" . $file . ".pdf";
+    my $command = "cp $sourcefile $destfile";
     print "$command\n";
     system "$command";
+    setmtime($destfile,$sourcefile);
 }
 
 sub transmogrify($) {
@@ -49,3 +55,15 @@ sub cleanup(@) {
     @list = grep(!/template/,@list);
     return @list;
 }
+
+sub setmtime($$) {
+    my ($file, $sourcefile) = @_;
+    # Find out last modified time for the directory the source file was in
+    my $directory = `dirname $sourcefile`;
+    chomp $directory;
+
+    my $mtime = `git log -1 --format=%ct -- $directory`;
+    chomp $mtime;
+    
+    utime(time(),$mtime,$file);
+}