diff --git a/test/arguments b/test/arguments
index 4bd543a..04800fc 100644
--- a/test/arguments
+++ b/test/arguments
@@ -2,7 +2,8 @@
 # Copyright 2023, project-repo and the cagebreak contributors
 # SPDX-License-Identifier: MIT
 
-testdir=$(mktemp -d)
+testdir="${MESONCURRENTCONFIGDIR}/_build-arguments/"
+mkdir "${testdir}"
 mkdir "${testdir}/arguments/"
 
 readonly helptext="Usage: ./cagebreak [OPTIONS]
diff --git a/test/environment-variables b/test/environment-variables
index aa67dfa..f1c9fac 100644
--- a/test/environment-variables
+++ b/test/environment-variables
@@ -2,7 +2,8 @@
 # Copyright 2023, project-repo and the cagebreak contributors
 # SPDX-License-Identifier: MIT
 
-testdir=$(mktemp -d)
+testdir="${MESONCURRENTCONFIGDIR}/_build-envvars"
+mkdir "${testdir}"
 mkdir "${testdir}/envvars/"
 mkdir "${testdir}/cagebreak"