diff --git a/DESCRIPTION b/DESCRIPTION
index a9755ca..ebda399 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -21,6 +21,7 @@ Imports:
     dplyr,
     httr,
     jsonlite,
+    methods,
     tibble
 Suggests: 
     knitr,
diff --git a/R/utils.R b/R/utils.R
index dabb06d..54aa2d0 100644
--- a/R/utils.R
+++ b/R/utils.R
@@ -239,7 +239,7 @@ rtoot_ask <- function(prompt = "enter authorization code: ", pass = TRUE, check_
 
 handle_id <- function(x) {
     ## Convert x to snowflake id if it is POSIXct
-    if (is(x, "POSIXct")) {
+    if (methods::is(x, "POSIXct")) {
         return(as.numeric(x) * (2^16) * 1000)
     }
     x