diff --git a/.Rbuildignore b/.Rbuildignore
index 8f0cdc7..b35650a 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -16,7 +16,7 @@
 ^docs$
 ^pkgdown$
 ^vignettes$
-^tests/figs$
+^tests/testthat/_snaps$
 ^\.github$
 ^README.md$
 ^CRAN-SUBMISSION$
diff --git a/cran-comments.md b/cran-comments.md
index 3e03982..ff5031b 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -1,3 +1,6 @@
+## resubmission
+- reduced build size by removing reference snapshots from test folder
+
 ## R CMD check results
 
 0 errors | 0 warnings | 0 note
diff --git a/man/manip_explicit_na.Rd b/man/manip_explicit_na.Rd
new file mode 100644
index 0000000..535282e
--- /dev/null
+++ b/man/manip_explicit_na.Rd
@@ -0,0 +1,13 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/manip.R
+\name{manip_explicit_na}
+\alias{manip_explicit_na}
+\title{Make NA levels explicit}
+\usage{
+manip_explicit_na(f, na_level)
+}
+\description{
+fct_na_value_to_level will create a NA level even there is
+none present to begin with
+}
+\keyword{internal}