diff --git a/DESCRIPTION b/DESCRIPTION
index 863b406..7e54036 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -16,7 +16,6 @@ License: MIT + file LICENSE
 Encoding: UTF-8
 LazyData: true
 Roxygen: list(markdown = TRUE)
-RoxygenNote: 7.3.3
 Depends:
   R (>= 4.1.0)
 Imports:
@@ -42,3 +41,4 @@ Suggests:
   usethis,
   leaflet
 Config/testthat/edition: 3
+Config/roxygen2/version: 8.0.0
diff --git a/NEWS.md b/NEWS.md
index fb8302a..9a20923 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,7 @@
+# mapgl (development version)
+
+* Fixed a bug where passing a geometry-only `sf` object (no non-geometry columns) as a layer source caused a serialization error. `geojsonsf::sf_geojson()` simplifies property-less sf objects into a vector of individual geometry strings rather than a FeatureCollection, which `htmlwidgets` cannot serialize. All internal calls now use `simplify = FALSE` to consistently return a FeatureCollection (#212).
+
 # mapgl 0.5.0
 
 * Tooltips and popups now accept `{brace}` templates package-wide. Any layer's `tooltip`/`popup` (and `set_tooltip()`/`set_popup()`) can take a glue-style template such as `"{name}: {population}"`, in addition to the existing column name and `concat()`/`number_format()` expression forms; substituted values are HTML-escaped.
diff --git a/R/layers.R b/R/layers.R
index 2955286..52bbc8b 100644
--- a/R/layers.R
+++ b/R/layers.R
@@ -96,7 +96,7 @@ add_layer <- function(
     if (sf::st_crs(source) != 4326) {
       source <- sf::st_transform(source, crs = 4326)
     }
-    geojson <- geojsonsf::sf_geojson(source)
+    geojson <- geojsonsf::sf_geojson(source, simplify = FALSE)
     source <- list(
       type = "geojson",
       data = geojson,
diff --git a/R/shiny.R b/R/shiny.R
index ba62839..106c0ae 100644
--- a/R/shiny.R
+++ b/R/shiny.R
@@ -696,7 +696,7 @@ set_source <- function(map, layer_id = NULL, source, layer = NULL) {
       source <- geojsonsf::sf_geojson(sf::st_transform(
         source,
         crs = 4326
-      ))
+      ), simplify = FALSE)
     }
 
     if (
diff --git a/R/sources.R b/R/sources.R
index 8e7e5a5..3c2c6d3 100644
--- a/R/sources.R
+++ b/R/sources.R
@@ -16,7 +16,7 @@ add_source <- function(map, id, data, ...) {
     if (sf::st_crs(data) != 4326) {
       data <- sf::st_transform(data, crs = 4326)
     }
-    geojson <- geojsonsf::sf_geojson(data)
+    geojson <- geojsonsf::sf_geojson(data, simplify = FALSE)
   } else if (is.character(data) && grepl("^http", data)) {
     geojson <- data
   } else {
diff --git a/R/turf.R b/R/turf.R
index b3247d7..d47f2ff 100644
--- a/R/turf.R
+++ b/R/turf.R
@@ -66,7 +66,7 @@ turf_buffer <- function(
     if (!inherits(data, "sf")) {
       stop("data must be an sf object.")
     }
-    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326))
+    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326), simplify = FALSE)
   }
 
   # Validate coordinates
@@ -176,7 +176,7 @@ turf_union <- function(
     if (!inherits(data, "sf")) {
       stop("data must be an sf object.")
     }
-    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326))
+    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326), simplify = FALSE)
   }
 
   # Handle proxy objects (Shiny)
@@ -287,7 +287,7 @@ turf_intersect <- function(
     if (!inherits(data, "sf")) {
       stop("data must be an sf object.")
     }
-    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326))
+    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326), simplify = FALSE)
   }
 
   # Convert sf data_2 to GeoJSON if provided
@@ -299,7 +299,7 @@ turf_intersect <- function(
     geojson_data_2 <- geojsonsf::sf_geojson(sf::st_transform(
       data_2,
       crs = 4326
-    ))
+    ), simplify = FALSE)
   }
 
   # Handle proxy objects (Shiny)
@@ -414,7 +414,7 @@ turf_difference <- function(
     if (!inherits(data, "sf")) {
       stop("data must be an sf object.")
     }
-    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326))
+    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326), simplify = FALSE)
   }
 
   # Convert sf data_2 to GeoJSON if provided
@@ -426,7 +426,7 @@ turf_difference <- function(
     geojson_data_2 <- geojsonsf::sf_geojson(sf::st_transform(
       data_2,
       crs = 4326
-    ))
+    ), simplify = FALSE)
   }
 
   # Handle proxy objects (Shiny)
@@ -529,7 +529,7 @@ turf_convex_hull <- function(
     if (!inherits(data, "sf")) {
       stop("data must be an sf object.")
     }
-    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326))
+    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326), simplify = FALSE)
   }
 
   # Validate and process coordinates
@@ -649,7 +649,7 @@ turf_concave_hull <- function(
     if (!inherits(data, "sf")) {
       stop("data must be an sf object.")
     }
-    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326))
+    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326), simplify = FALSE)
   }
 
   # Validate and process coordinates
@@ -769,7 +769,7 @@ turf_voronoi <- function(
     if (!inherits(data, "sf")) {
       stop("data must be an sf object.")
     }
-    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326))
+    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326), simplify = FALSE)
   }
 
   # Process bbox parameter
@@ -931,7 +931,7 @@ turf_distance <- function(
     if (!inherits(data, "sf")) {
       stop("data must be an sf object.")
     }
-    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326))
+    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326), simplify = FALSE)
   }
 
   # Validate coordinates
@@ -1011,7 +1011,7 @@ turf_area <- function(
     if (!inherits(data, "sf")) {
       stop("data must be an sf object.")
     }
-    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326))
+    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326), simplify = FALSE)
   }
 
   proxy_class <- if (inherits(proxy, "mapboxgl_proxy")) {
@@ -1074,7 +1074,7 @@ turf_centroid <- function(
     if (!inherits(data, "sf")) {
       stop("data must be an sf object.")
     }
-    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326))
+    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326), simplify = FALSE)
   }
 
   # Validate and process coordinates
@@ -1196,7 +1196,7 @@ turf_center_of_mass <- function(
     if (!inherits(data, "sf")) {
       stop("data must be an sf object.")
     }
-    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326))
+    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326), simplify = FALSE)
   }
 
   # Validate and process coordinates
@@ -1332,7 +1332,7 @@ turf_filter <- function(
     if (!inherits(data, "sf")) {
       stop("data must be an sf object.")
     }
-    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326))
+    geojson_data <- geojsonsf::sf_geojson(sf::st_transform(data, crs = 4326), simplify = FALSE)
   }
 
   # Convert sf filter_data to GeoJSON if provided
@@ -1344,7 +1344,7 @@ turf_filter <- function(
     geojson_filter_data <- geojsonsf::sf_geojson(sf::st_transform(
       filter_data,
       crs = 4326
-    ))
+    ), simplify = FALSE)
   }
 
   # Handle proxy objects (Shiny)
diff --git a/man/mapgl-package.Rd b/man/mapgl-package.Rd
index 57ec637..dce4f11 100644
--- a/man/mapgl-package.Rd
+++ b/man/mapgl-package.Rd
@@ -21,6 +21,11 @@ Useful links:
 \author{
 \strong{Maintainer}: Kyle Walker \email{kyle@walker-data.com}
 
+Authors:
+\itemize{
+  \item Kyle Walker \email{kyle@walker-data.com}
+}
+
 Other contributors:
 \itemize{
   \item Egor Kotov \email{kotov.egor@gmail.com} [contributor]