diff --git a/NEWS.md b/NEWS.md
index 729783b4..97f94d1d 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -18,6 +18,7 @@
 * Ensure `rfun()` works with primitive functions (#290) and dots arguments (#291).
 * Provide implementations of `vctrs::vec_proxy_equal()`, `vctrs::vec_proxy_compare()`,
   and `vctrs::vec_proxy_order()`.
+* Future-proof `cbind(<rvar>)` and `rbind(<rvar>)` for R 4.4 (#304).
 
 
 # posterior 1.4.1
diff --git a/R/rvar-bind.R b/R/rvar-bind.R
index bcbef822..55c1a58a 100755
--- a/R/rvar-bind.R
+++ b/R/rvar-bind.R
@@ -26,16 +26,18 @@ c.rvar <- function(...) {
 }
 
 #' @export
-rbind.rvar <- function(...) {
-  # not sure why deparse.level is not passed here correctly...
-  deparse.level <- rlang::caller_env()$deparse.level %||% 1
+rbind.rvar <- function(..., deparse.level = 1) {
+  # deparse.level is not correctly passed here by the default rbind
+  # implementation in R < 4.4, so we grab it from the calling environment
+  deparse.level <- rlang::caller_env()$deparse.level %||% deparse.level
   bind_rvars(list(...), as.list(substitute(list(...))[-1]), deparse.level)
 }
 
 #' @export
-cbind.rvar <- function(...) {
-  # not sure why deparse.level is not passed here correctly...
-  deparse.level <- rlang::caller_env()$deparse.level %||% 1
+cbind.rvar <- function(..., deparse.level = 1) {
+  # deparse.level is not correctly passed here by the default cbind
+  # implementation in R < 4.4, so we grab it from the calling environment
+  deparse.level <- rlang::caller_env()$deparse.level %||% deparse.level
   bind_rvars(list(...), as.list(substitute(list(...))[-1]), deparse.level, axis = 2)
 }