diff --git a/DESCRIPTION b/DESCRIPTION
index f9f4246..b4159a2 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -36,6 +36,7 @@ Imports:
     rlang,
     cli
 Suggests: 
+    crew,
     terra,
     testthat (>= 3.0.0),
     withr
diff --git a/tests/testthat/test-tar-terra.R b/tests/testthat/test-tar-terra.R
index 4bdc8c0..e3a0d73 100644
--- a/tests/testthat/test-tar-terra.R
+++ b/tests/testthat/test-tar-terra.R
@@ -32,15 +32,32 @@ targets::tar_test("tar_terra_rast(zipfile=TRUE) works", {
                 filetype = "GPKG",
                 zipfile = TRUE
             )
-        )
+         )
     })
     targets::tar_make()
+    expect_true(all(is.na(targets::tar_meta()$error)))
     x <- targets::tar_read(test_terra_rast2)
-    y <- targets::tar_read(test_terra_rast3)
     expect_s4_class(x, "SpatRaster")
-    expect_snapshot(
-        x
-    )
+    expect_snapshot(x)
+})   
+
+targets::tar_test("tar_terra_rast() works with multiple workers (tests marshaling/unmarshaling)", {
+    targets::tar_script({
+        targets::tar_option_set(controller = crew::crew_controller_local(workers = 2))
+        list(
+            geotargets::tar_terra_rast(
+                rast1,
+                terra::rast(system.file("ex/elev.tif", package = "terra"))
+            ),
+            geotargets::tar_terra_rast(
+                rast2,
+                terra::rast(system.file("ex/elev.tif", package = "terra"))
+            )
+        )
+    })
+    targets::tar_make()
+    expect_true(all(is.na(targets::tar_meta()$error)))
+    expect_s4_class(targets::tar_read(rast1), "SpatRaster")
 })
 
 targets::tar_test("tar_terra_vect() works", {
@@ -84,3 +101,23 @@ targets::tar_test("tar_terra_vect() works", {
     expect_equal(terra::values(x), terra::values(y))
     expect_equal(terra::values(y), terra::values(z))
 })
+
+targets::tar_test("tar_terra_vect() works with multiple workers (tests marshaling/unmarshaling)", {
+    targets::tar_script({
+        targets::tar_option_set(controller = crew::crew_controller_local(workers = 2))
+        list(
+            geotargets::tar_terra_vect(
+                vect1,
+                terra::vect(system.file("ex", "lux.shp", package = "terra"))
+            ),
+            geotargets::tar_terra_vect(
+                vect2,
+                terra::vect(system.file("ex", "lux.shp", package = "terra"))
+            )
+        )
+    })
+    targets::tar_make()
+    expect_true(all(is.na(targets::tar_meta()$error)))
+    expect_s4_class(targets::tar_read(vect1), "SpatVector")
+})
+