diff --git a/environment.yml b/environment.yml
index 1e0cfd86..e9c036fc 100644
--- a/environment.yml
+++ b/environment.yml
@@ -34,4 +34,5 @@ dependencies:
   - r-testthat
   - r-mockthat
   - r-pkgload
-  - r-codetools
\ No newline at end of file
+  - r-codetools
+  - qpdf
\ No newline at end of file