diff --git a/R/compat-dplyr.R b/R/compat-dplyr.R
index bbeb3c919..340810003 100644
--- a/R/compat-dplyr.R
+++ b/R/compat-dplyr.R
@@ -57,12 +57,3 @@ map_dfr <- function(.x, .f, ...) {
   res <- map(.x, .f, ...)
   vec_rbind(!!!res)
 }
-
-mutate <- function(.data, ...) {
-  collected <- list(...)
-  for (idx in seq_along(collected)) {
-    .data[names(collected)[idx]] <- unname(collected[[idx]])
-  }
-
-  .data
-}
diff --git a/tests/testthat/test-cache-low-level-api.R b/tests/testthat/test-cache-low-level-api.R
index b5f29b342..f4b4694ea 100644
--- a/tests/testthat/test-cache-low-level-api.R
+++ b/tests/testthat/test-cache-low-level-api.R
@@ -1,16 +1,16 @@
 test_that("caching utils make right blocks with semi-colon", {
   blocks_simple_uncached <- compute_parse_data_nested(c("1 + 1", "2; 1+1")) %>%
-    mutate(is_cached = FALSE) %>%
+    base::transform(is_cached = FALSE) %>%
     cache_find_block()
   expect_equal(blocks_simple_uncached, c(1, 1, 1, 1))
 
   blocks_simple_cached <- compute_parse_data_nested(c("1 + 1", "2; 1+1")) %>%
-    mutate(is_cached = TRUE) %>%
+    base::transform(is_cached = TRUE) %>%
     cache_find_block()
   expect_equal(blocks_simple_cached, c(1, 1, 1, 1))
 
   blocks_edge <- compute_parse_data_nested(c("1 + 1", "2; 1+1")) %>%
-    mutate(is_cached = c(TRUE, TRUE, FALSE, FALSE)) %>%
+    base::transform(is_cached = c(TRUE, TRUE, FALSE, FALSE)) %>%
     cache_find_block()
   expect_equal(blocks_edge, c(1, 2, 2, 2))
 })
@@ -30,7 +30,7 @@ test_that("caching utils make right blocks with comments", {
 
 
   blocks_simple_uncached <- compute_parse_data_nested(text) %>%
-    mutate(is_cached = c(
+    base::transform(is_cached = c(
       FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE,
       TRUE, FALSE, FALSE, FALSE
     )) %>%
@@ -48,7 +48,7 @@ test_that("caching utils make right blocks with comments", {
    tau1 = 1 # here?
    "
   blocks_simple_cached <- compute_parse_data_nested(text) %>%
-    mutate(is_cached = c(
+    base::transform(is_cached = c(
       FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE
     )) %>%
     cache_find_block()
@@ -101,17 +101,17 @@ test_that("blank lines are correctly identified", {
 
 test_that("caching utils make right blocks with comments", {
   blocks_simple_uncached <- compute_parse_data_nested(c("1 + 1", "2 # comment")) %>%
-    mutate(is_cached = FALSE) %>%
+    base::transform(is_cached = FALSE) %>%
     cache_find_block()
   expect_equal(blocks_simple_uncached, c(1, 1, 1))
 
   blocks_simple_cached <- compute_parse_data_nested(c("1 + 1", "2 # comment2")) %>%
-    mutate(is_cached = TRUE) %>%
+    base::transform(is_cached = TRUE) %>%
     cache_find_block()
   expect_equal(blocks_simple_cached, c(1, 1, 1))
 
   blocks_edge <- compute_parse_data_nested(c("1 + 1", "2 # 1+1")) %>%
-    mutate(is_cached = c(TRUE, TRUE, FALSE)) %>%
+    base::transform(is_cached = c(TRUE, TRUE, FALSE)) %>%
     cache_find_block()
   expect_equal(blocks_edge, c(1, 2, 2))
 })