issue with devtools and openslssl
diff --git a/DESCRIPTION b/DESCRIPTION
index ece269b..788a456 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -18,6 +18,6 @@
 LazyData: true
 URL: https://github.com/brentthorne/posterdown
 BugReports: https://github.com/brentthorne/posterdown/issues
-Imports: bookdown, ggplot2, pagedown, kableExtra, Cairo, rmarkdown, knitr, yaml
+Imports: bookdown, ggplot2, pagedown, kableExtra, Cairo, rmarkdown, knitr, yaml, ggspatial
 SystemRequirements: GNU make
 RoxygenNote: 6.1.1