diff --git a/README.adoc b/README.adoc
index 2816a8a..25f9bcf 100644
--- a/README.adoc
+++ b/README.adoc
@@ -46,10 +46,10 @@ image::https://repology.org/badge/vertical-allrepos/epubgrep.svg[]
 
 [source,shell]
 --------------------------------------------------------------------------------
-eselect repository enable guru
-echo 'app-text/epubgrep' >> /etc/portage/package.accept_keywords/epubgrep
-emaint sync -r guru
-emerge -a app-text/epubgrep
+sudo eselect repository enable guru
+echo 'app-text/epubgrep' | sudo tee -a /etc/portage/package.accept_keywords/epubgrep
+sudo emaint sync -r guru
+sudo emerge -a app-text/epubgrep
 --------------------------------------------------------------------------------
 
 === From source
@@ -77,7 +77,7 @@ Debian buster or Ubuntu bionic.
 
 [source,shell]
 --------------------------------------------------------------------------------
-apt install build-essential cmake libboost-program-options-dev libboost-locale-dev libboost-regex-dev gettext libarchive-dev libfmt-dev asciidoc
+sudo apt install build-essential cmake libboost-program-options-dev libboost-locale-dev libboost-regex-dev gettext libarchive-dev libfmt-dev asciidoc
 --------------------------------------------------------------------------------
 
 ==== Get sourcecode
@@ -105,7 +105,7 @@ cmake ..
 cmake --build . -- --jobs=$(nproc --ignore=1)
 --------------------------------------------------------------------------------
 
-To install, run `make install`. To run the tests, run `cd tests && ctest`.
+To install, run `sudo make install`. To run the tests, run `cd tests && ctest`.
 
 .CMake options:
 * `-DCMAKE_BUILD_TYPE=Debug` for a debug build.