diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1d67d56..e7c49fe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,3 +15,4 @@
 * `App\Enum\ProjectType` now returns a string.
 * `App\Enum\Webserver` now returns a string.
 * `ConfigurationValidatorTest` no longer performs serialisation.
+* Use `set -o errexit` and `set -o pipefail` in `run` scripts instead of `set -eu`.
diff --git a/templates/astro/run.twig b/templates/astro/run.twig
index 8cabdb1..c9ebd45 100755
--- a/templates/astro/run.twig
+++ b/templates/astro/run.twig
@@ -2,7 +2,8 @@
 
 # {{ managedText | raw }}
 
-set -eu
+set -o errexit
+set -o pipefail
 
 {% set isFlake = flake is defined %}
 
diff --git a/templates/drupal/run.twig b/templates/drupal/run.twig
index 0d42b75..7e3c922 100755
--- a/templates/drupal/run.twig
+++ b/templates/drupal/run.twig
@@ -2,7 +2,8 @@
 
 # {{ managedText | raw }}
 
-set -eu
+set -o errexit
+set -o pipefail
 
 # Run automated tests as part of the Continuous Integration (CI) pipeline.
 function ci:test {
diff --git a/templates/fractal/run.twig b/templates/fractal/run.twig
index 134a9f6..630b8bd 100755
--- a/templates/fractal/run.twig
+++ b/templates/fractal/run.twig
@@ -2,7 +2,8 @@
 
 # {{ managedText | raw }}
 
-set -eu
+set -o errexit
+set -o pipefail
 
 {% set isDocker = flake is not defined %}
 {% set isFlake = flake is defined %}
diff --git a/templates/terraform/run.twig b/templates/terraform/run.twig
index 116c43c..b20aa06 100755
--- a/templates/terraform/run.twig
+++ b/templates/terraform/run.twig
@@ -2,7 +2,8 @@
 
 # {{ managedText | raw }}
 
-set -eu
+set -o errexit
+set -o pipefail
 
 # Disable Git hooks.
 function git-hooks:off {