diff --git a/DESCRIPTION b/DESCRIPTION
index a4944e73..e0831560 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: odin
 Title: ODE Generation and Integration
-Version: 1.5.10
+Version: 1.5.11
 Authors@R: c(person("Rich", "FitzJohn", role = c("aut", "cre"),
                     email = "rich.fitzjohn@gmail.com"),
              person("Thibaut", "Jombart", role = "ctb"),
diff --git a/README.md b/README.md
index cd6921a5..6a34cb2e 100644
--- a/README.md
+++ b/README.md
@@ -141,12 +141,12 @@ Install odin from CRAN with
 install.packages("odin")
 ```
 
-Alternatively, you can install a potentially more recent version of odin from the [`mrc-ide` drat repository](https://mrc-ide.github.io/drat/)
+Alternatively, you can install a potentially more recent version of odin from the [`mrc-ide` universe](https://mrc-ide.r-universe.dev/)
 
 ```r
-# install.packages("drat") # -- if you don't have drat installed
-drat:::add("mrc-ide")
-install.packages("odin")
+install.packages(
+  "odin",
+  repos = c("https://mrc-ide.r-universe.dev", "https://cloud.r-project.org"))
 ```
 
 You will need a compiler to install dependencies for the package, and to build any models with odin.  Windows users should install [Rtools](https://cran.r-project.org/bin/windows/Rtools/).  See the relevant section in [R-admin](https://cran.r-project.org/doc/manuals/r-release/R-admin.html#The-Windows-toolset) for advice.  Be sure to select the "edit PATH" checkbox during installation or the tools will not be found.
diff --git a/tests/testthat/test-package.R b/tests/testthat/test-package.R
index a1c6aa35..66594364 100644
--- a/tests/testthat/test-package.R
+++ b/tests/testthat/test-package.R
@@ -31,6 +31,7 @@ test_that("generate package", {
 
 test_that("interpolation", {
   skip_on_windows_gha()
+  skip_on_os("mac")
   res <- odin_create_package("interpolation", "examples/interpolate_odin.R")
   on.exit(res$cleanup())
 
diff --git a/tests/testthat/test-run-examples.R b/tests/testthat/test-run-examples.R
index 6d1c5705..30dd241e 100644
--- a/tests/testthat/test-run-examples.R
+++ b/tests/testthat/test-run-examples.R
@@ -7,6 +7,7 @@ test_that_odin("basic interface", {
   ## M1. These tests need refactoring anyway.
   skip_on_cran()
   skip_for_target("js") # some tolerance issues that are not worth chasing
+  skip_on_os("mac")
   re <- "([[:alnum:]]+)_odin\\.R$"
   files <- dir("examples", re)
   base <- sub(re, "\\1", files)
@@ -203,6 +204,7 @@ test_that_odin("lv", {
 test_that_odin("dde", {
   skip_if_not_installed("dde")
   skip_for_target("js")
+  skip_on_os("mac")
   ## This test is failing on M1 Mac checks, with tolerance needing
   ## tweaking for one of the examples, probably the Lorenz attractor
   ## as being chaotic, deviations are expected to grow. Without access