diff --git a/NAMESPACE b/NAMESPACE
index 00959b1..be4a05d 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -14,4 +14,6 @@ export(pkg_internals)
 export(projects)
 export(symbols)
 
+importFrom(stats,runif)
 importFrom(utils,getParseData)
+importFrom(utils,head)
diff --git a/R/graph_svg.R b/R/graph_svg.R
index 11750d1..884168a 100644
--- a/R/graph_svg.R
+++ b/R/graph_svg.R
@@ -29,6 +29,8 @@
 #'   deterministic given the same seed).
 #' @return Character vector, one SVG element per line. Write with
 #'   \code{writeLines()}.
+#' @importFrom stats runif
+#' @importFrom utils head
 #' @examples
 #' edges <- data.frame(from = c("a", "a", "b"),
 #'                     to = c("b", "c", "c"))