diff --git a/README.md b/README.md
index ca3a26d..02ed982 100644
--- a/README.md
+++ b/README.md
@@ -11,18 +11,19 @@ require «doc-gen4» from git "https://github.com/leanprover/doc-gen4" @ "main"
 
 Then update your dependencies:
 ```
-lake -Kenv=dev update
+lake -R -Kenv=dev update
 ```
 
 Then you can generate documentation for an entire library and all files imported
 by that library using:
 ```
-lake -Kenv=dev build Test:docs
+lake -R -Kenv=dev build Test:docs
 ```
 If you have multiple libraries you want to generate full documentation for:
 ```
-lake -Kenv=dev build Test:docs Foo:docs
+lake -R -Kenv=dev build Test:docs Foo:docs
 ```
+
 Note that `doc-gen4` currently always generates documentation for `Lean`, `Init`
 and `Lake` in addition to the provided targets.
 
diff --git a/test_docs.sh b/test_docs.sh
index 387af03..c42005e 100755
--- a/test_docs.sh
+++ b/test_docs.sh
@@ -9,5 +9,5 @@ set -x
 cd "$1"
 sed -i "s|from git \"https://github.com/leanprover/doc-gen4\" @ \"main\"| from \"..\" / \"doc-gen4\" with NameMap.empty|" lakefile.lean
 
-lake -Kdoc=on update
-lake -Kdoc=on build Std:docs
+lake -R -Kdoc=on update
+lake -R -Kdoc=on build Std:docs