diff --git a/.Rbuildignore b/.Rbuildignore
new file mode 100644
index 00000000..e7f83606
--- /dev/null
+++ b/.Rbuildignore
@@ -0,0 +1,20 @@
+^.*\.Rproj$
+^\.Rproj\.user$
+^appveyor\.yml$
+^docs$
+^_pkgdown\.yml$
+^.*\.Rproj$
+^\.Rproj\.user$
+^README\.Rmd$
+^README-.*\.png$
+.travis.yml
+^pkgdown$
+^doc$
+cran-comments.md
+TODO.R
+TO_DO
+^revdep$
+^\.github$
+.DS_Store
+^reconf\.sh$
+^rjd3toolkit-java-deps\.xml$
diff --git a/.gitignore b/.gitignore
index af992a64..f87d9b50 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,4 @@
 .Rproj.user
-.Rbuildignore
 .Rhistory
 .RData
 .Ruserdata
diff --git a/NAMESPACE b/NAMESPACE
index ef2fafc2..b6845f85 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -306,6 +306,7 @@ importFrom(rJava,.jpackage)
 importFrom(rJava,is.jnull)
 importFrom(stats,.preformat.ts)
 importFrom(stats,coef)
+importFrom(stats,cycle)
 importFrom(stats,df.residual)
 importFrom(stats,end)
 importFrom(stats,frequency)
diff --git a/R/calendars.R b/R/calendars.R
index 04873fce..50d0ff24 100644
--- a/R/calendars.R
+++ b/R/calendars.R
@@ -1,6 +1,6 @@
 #' @import checkmate
 #' @importFrom methods is
-#' @importFrom stats frequency ts is.ts is.mts start end
+#' @importFrom stats frequency ts is.ts is.mts start end cycle
 #' @include protobuf.R jd2r.R
 NULL