diff --git a/.lgtm.yml b/.lgtm.yml
new file mode 100644
index 0000000000..6bf3e9bea0
--- /dev/null
+++ b/.lgtm.yml
@@ -0,0 +1,4 @@
+---
+queries:
+  # https://lgtm.com/rules/6770079/
+  - exclude: py/unused-import
diff --git a/pdf_build_src/process_markdowns.py b/pdf_build_src/process_markdowns.py
index 53d9481d29..a1e5bfd38e 100644
--- a/pdf_build_src/process_markdowns.py
+++ b/pdf_build_src/process_markdowns.py
@@ -16,7 +16,8 @@
 import numpy as np
 
 sys.path.append("../tools/")
-from mkdocs_macros_bids import macros  # noqa   (used in "eval" call later on)
+# functions from module macros are called by eval() later on
+from mkdocs_macros_bids import macros  # noqa: F401
 
 
 def run_shell_cmd(command):