diff --git a/DESCRIPTION b/DESCRIPTION
index 803b41f5..253d664a 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -48,7 +48,8 @@ Suggests:
     deldir,
     gganimate,
     covr,
-    sf
+    sf,
+    sfnetworks
 LinkingTo: Rcpp
 RoxygenNote: 7.3.1
 Depends:
diff --git a/NAMESPACE b/NAMESPACE
index d9f53144..e8397916 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -393,6 +393,7 @@ importFrom(igraph,simplify)
 importFrom(igraph,unfold_tree)
 importFrom(igraph,vertex_attr)
 importFrom(lifecycle,deprecated)
+importFrom(memoise,memoise)
 importFrom(rlang,.data)
 importFrom(rlang,as_quosure)
 importFrom(rlang,enquo)
diff --git a/NEWS.md b/NEWS.md
index 83d4ec9b..08dfe755 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -31,7 +31,8 @@
   `geom_edge_bundle_minimal()` (+ variants) to provide support for edge bundling 
   (#267)
 * Add "metro" layout from graphlayouts for metroline like layouts
-* Add `layout_sf()`, `geom_node_sf()` and `geom_edge_sf()` to support plotting of [`sfnetwork`](https://luukvdmeer.github.io/sfnetworks/) objects (#275)
+* Add `layout_sf()`, `geom_node_sf()` and `geom_edge_sf()` to support plotting of
+  [`sfnetwork`](https://luukvdmeer.github.io/sfnetworks/) objects (#275)
 
 # ggraph 2.1.0
 
diff --git a/R/geom_edge_bundle_force.R b/R/geom_edge_bundle_force.R
index 99ef7578..e3b2c427 100644
--- a/R/geom_edge_bundle_force.R
+++ b/R/geom_edge_bundle_force.R
@@ -301,4 +301,4 @@ force_bundle <- function(data, K, C, P, S, P_rate, I, I_rate, compatibility_thre
   )
 }
 
-force_bundle_mem <- memoise::memoise(force_bundle)
+force_bundle_mem <- memoise(force_bundle)
diff --git a/R/geom_edge_bundle_minimal.R b/R/geom_edge_bundle_minimal.R
index c4b820b6..53f0428e 100644
--- a/R/geom_edge_bundle_minimal.R
+++ b/R/geom_edge_bundle_minimal.R
@@ -274,4 +274,4 @@ minimal_bundle <- function(graph, nodes, from, to, max_distortion = 2, weight_fa
   data_frame0(x = nodes$x[paths], y = nodes$y[paths], group = ids)
 }
 
-minimal_bundle_mem <- memoise::memoise(minimal_bundle)
+minimal_bundle_mem <- memoise(minimal_bundle)
diff --git a/R/geom_edge_bundle_path.R b/R/geom_edge_bundle_path.R
index 1bf2b30f..9714f4a2 100644
--- a/R/geom_edge_bundle_path.R
+++ b/R/geom_edge_bundle_path.R
@@ -325,4 +325,4 @@ path_bundle <- function(graph, nodes, from, to, directed = directed, max_distort
   data_frame0(x = nodes$x[paths], y = nodes$y[paths], group = ids)
 }
 
-path_bundle_mem <- memoise::memoise(path_bundle)
+path_bundle_mem <- memoise(path_bundle)
diff --git a/R/geom_node_sf.R b/R/geom_node_sf.R
index 50f7d92e..92a32986 100644
--- a/R/geom_node_sf.R
+++ b/R/geom_node_sf.R
@@ -24,10 +24,12 @@
 #' @family geom_node_*
 #'
 #' @examples
+#' library(tidygraph)
+#'
 #' if (require("sfnetworks", quietly = TRUE)) {
-#'   gr <- sfnetworks::as_sfnetwork(roxel) %>%
-#'     mutate(centrality = centrality_betweenness())
-#'   ggraph(gr, 'sf') + geom_node_sf(aes(color = centrality))
+#'   gr <- sfnetworks::as_sfnetwork(roxel)
+#'   ggraph(gr, 'sf') +
+#'     geom_node_sf(aes(color = centrality_betweenness()))
 #' }
 #'
 #' @export
diff --git a/R/ggraph-package.R b/R/ggraph-package.R
index 900d57f0..cfb6c680 100644
--- a/R/ggraph-package.R
+++ b/R/ggraph-package.R
@@ -1,4 +1,3 @@
-#' @aliases ggraph-package
 #' @keywords internal
 '_PACKAGE'
 
@@ -6,6 +5,7 @@
 # roxygen namespace tags. Modify with care!
 ## usethis namespace: start
 #' @import ggplot2 tidygraph rlang vctrs
+#' @importFrom memoise memoise
 #' @importFrom lifecycle deprecated
 #' @importFrom Rcpp sourceCpp
 #' @useDynLib ggraph
diff --git a/R/layout_stress.R b/R/layout_stress.R
index 59d2f9e4..b67597d8 100644
--- a/R/layout_stress.R
+++ b/R/layout_stress.R
@@ -59,7 +59,7 @@ layout_tbl_graph_stress <- function(graph, weights = NULL, niter = 500,
     xy <- cbind(x_coord, y_coord)
     if (anyNA(xy)) {
       xy <- layout_with_fixed_coords(graph, xy, weights = weights, iter = niter,
-                                     tol = tol, mds = mds, bbox = bbox)
+                                     tol = tolerance, mds = mds, bbox = bbox)
     }
   } else {
     dim <- if (is.null(x_coord)) "y" else "x"
diff --git a/man/geom_node_sf.Rd b/man/geom_node_sf.Rd
index 3aa8dc06..a5073779 100644
--- a/man/geom_node_sf.Rd
+++ b/man/geom_node_sf.Rd
@@ -67,10 +67,12 @@ different shapes, colours and sizes.
 }
 
 \examples{
+library(tidygraph)
+
 if (require("sfnetworks", quietly = TRUE)) {
-  gr <- sfnetworks::as_sfnetwork(roxel) \%>\%
-    mutate(centrality = centrality_betweenness())
-  ggraph(gr, 'sf') + geom_node_sf(aes(color = centrality))
+  gr <- sfnetworks::as_sfnetwork(roxel)
+  ggraph(gr, 'sf') +
+    geom_node_sf(aes(color = centrality_betweenness()))
 }
 
 }