diff --git a/explorer/plots/operation.py b/explorer/plots/operation.py
index d53ed25..683309b 100644
--- a/explorer/plots/operation.py
+++ b/explorer/plots/operation.py
@@ -891,10 +891,7 @@ def append_content(target_tag, source_path, part="body"):
     size = 176
 
 file = options["file1"].split(".darshan")[0]
-command = "drishti --html --light --size {} --json {} --export_dir {} {}.darshan".format(
-    size, json_file_path, file.split('/')[0], file
-)
-
+command = f"drishti --html --light --size {size} --export_dir {os.path.dirname(file)} --json {json_file_path} {file}.darshan"
 args = shlex.split(command)
 s = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
 sOutput, sError = s.communicate()
diff --git a/requirements.txt b/requirements.txt
index 8c2a6a4..ab1b32c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,4 +7,4 @@ pyranges>=0.0.120
 darshan
 pyarrow>=10.0.1
 bs4>=0.0.1
-drishti-io>=0.5
+drishti-io>=0.8