diff --git a/.Rbuildignore b/.Rbuildignore
index 4548e5d..34918a1 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -12,3 +12,4 @@
 ^codecov\.yml$
 ^LICENSE\.md$
 ^screencast.gif$
+^debugme\.Rproj$
diff --git a/DESCRIPTION b/DESCRIPTION
index dba6d43..747f4a9 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -18,7 +18,6 @@ Imports:
     grDevices
 Suggests:
     covr,
-    mockery,
     R6,
     testthat (>= 3.0.0),
     withr
diff --git a/debugme.Rproj b/debugme.Rproj
new file mode 100644
index 0000000..5d79cb7
--- /dev/null
+++ b/debugme.Rproj
@@ -0,0 +1,18 @@
+Version: 1.0
+
+RestoreWorkspace: No
+SaveWorkspace: No
+AlwaysSaveHistory: Default
+
+EnableCodeIndexing: Yes
+UseSpacesForTab: Yes
+NumSpacesForTab: 2
+Encoding: UTF-8
+
+RnwWeave: Sweave
+LaTeX: pdfLaTeX
+
+BuildType: Package
+PackageUseDevtools: Yes
+PackageInstallArgs: --no-multiarch --with-keep.source
+PackageRoxygenize: rd,collate,namespace
diff --git a/tests/testthat/test-colors.R b/tests/testthat/test-colors.R
index 4167122..090f575 100644
--- a/tests/testthat/test-colors.R
+++ b/tests/testthat/test-colors.R
@@ -1,24 +1,21 @@
 test_that("color palette is fine", {
-
-  val <- NULL
-
-  mockery::stub(initialize_colors, "assign",
-                function(x, value, envir, ...) val <<- value)
   initialize_colors(c("foo", "bar"))
-  expect_equal(names(val), c("foo", "bar"))
-  expect_true(all(val %in% grDevices::colors()))
+  expect_equal(names(debug_data[["palette"]]), c("foo", "bar"))
+  expect_true(all(debug_data[["palette"]] %in% grDevices::colors()))
 
   initialize_colors(letters)
-  expect_equal(names(val), letters)
-  expect_true(all(val %in% c("silver", grDevices::colors())))
+  expect_equal(names(debug_data[["palette"]]), letters)
+  expect_true(all(debug_data[["palette"]] %in% c("silver", grDevices::colors())))
 })
 
 ## Quite an artificial test case...
 
 test_that("get a package style", {
 
-  mockery::stub(get_package_style, "is_debugged", function(...) TRUE)
-  mockery::stub(get_package_style, "make_style", function(x) substitute(x))
+  local_mocked_bindings(
+    is_debugged = function(...) TRUE,
+    make_style = function(x) substitute(x)
+  )
   ret <- get_package_style("pkg")
   expect_equal(ret, quote(debug_data$palette[pkg]))
 })
diff --git a/tests/testthat/test-debug.R b/tests/testthat/test-debug.R
index 22eff85..0524daa 100644
--- a/tests/testthat/test-debug.R
+++ b/tests/testthat/test-debug.R
@@ -41,7 +41,9 @@ test_that("debug indent", {
 
 test_that("debug levels", {
 
-  mockery::stub(debug, "get_package_debug_level", 1)
+  local_mocked_bindings(
+    get_package_debug_level = function(...) 1
+  )
   env <- new.env()
   env$f1 <- function() debug("foobar", level = 1)
   env$f2 <- function() debug("baz", level = 2)
@@ -68,7 +70,7 @@ test_that("get_timestamp_stamp", {
 
   mytime <- structure(1477967634, class = c("POSIXct", "POSIXt"),
                       tzone = "UTC")
-  mockery::stub(get_timestamp_stamp, "Sys.time", mytime)
+  local_mocked_bindings(Sys.time = function() mytime, .package = "base")
   expect_equal(
     get_timestamp_stamp(),
     "2016-11-01T02:33:54.54.000+00:00 "
diff --git a/tests/testthat/test-levels.R b/tests/testthat/test-levels.R
index b91cfac..0a5d128 100644
--- a/tests/testthat/test-levels.R
+++ b/tests/testthat/test-levels.R
@@ -27,7 +27,7 @@ test_that("log levels work properly", {
   )
 
   for (pkg_level in 1:6) {
-    mockery::stub(debug, "get_package_debug_level", pkg_level)
+    local_mocked_bindings(get_package_debug_level = function(...) pkg_level)
     for (idx in seq_along(fs)) {
       if (idx <= pkg_level) {
         expect_output(fs[[idx]][[2]](), fs[[idx]][[1]])
diff --git a/tests/testthat/test-package.R b/tests/testthat/test-package.R
index b3f30a0..4b3008b 100644
--- a/tests/testthat/test-package.R
+++ b/tests/testthat/test-package.R
@@ -1,13 +1,9 @@
 test_that(".onLoad", {
-
-  val <- NULL
-
-  mockery::stub(refresh_pkg_info, "initialize_colors", function(pkgs) val <<- pkgs)
   withr::with_envvar(
     c("DEBUGME" = c("foo,bar")),
     refresh_pkg_info()
   )
-  expect_identical(val, c("foo", "bar"))
+  expect_identical(names(debug_data$palette), c("foo", "bar"))
 })
 
 test_that("debugme", {
@@ -18,13 +14,12 @@ test_that("debugme", {
   env$notme <- "!DEBUG nonono"
   env$.hidden <- function() { "!DEBUG foobar2" }
 
-  expect_silent(debugme(env))
-
-  mockery::stub(debugme, "is_debugged", TRUE)
-  debugme(env)
+  withr::local_envvar(DEBUGME = "debugme")
+  refresh_pkg_info()
+  debugme(env, pkg = "debugme")
 
   expect_silent(env$f1())
-  expect_output(env$f2(), "debugme foobar \\+[0-9]+ms")
+  expect_output(env$f2(), "debugme foobar ")
   expect_identical(env$notme, "!DEBUG nonono")
   expect_output(env$.hidden(), "debugme foobar2 \\+[0-9]+ms")
 })
@@ -35,14 +30,14 @@ test_that("instrument environments", {
   env$env <- new.env()
   env$env$fun <- function() { "!DEBUG coocoo" }
 
-  mockery::stub(debugme, "is_debugged", TRUE)
-  expect_silent(debugme(env))
+  withr::local_envvar(DEBUGME = "debugme")
+  refresh_pkg_info()
+  debugme(env, pkg = "debugme")
 
   expect_output(env$env$fun(), "coocoo")
 })
 
 test_that("instrument R6 classes", {
-
   env <- new.env()
   env$class <- R6::R6Class(
     "foobar",
@@ -61,8 +56,9 @@ test_that("instrument R6 classes", {
     )
   )
 
-  mockery::stub(debugme, "is_debugged", TRUE)
-  expect_silent(debugme(env))
+  withr::local_envvar(DEBUGME = "debugme")
+  refresh_pkg_info()
+  debugme(env, pkg = "debugme")
 
   expect_output(x <- env$class$new("mrx"), "debugme.*creating mrx")
   expect_output(x$hello(), "debugme.*hello mrx")