diff --git a/ext/readline/tests/libedit_callback_handler_install_001.phpt b/ext/readline/tests/libedit_callback_handler_install_001.phpt
index 9cea634bae52..a98027fbb9eb 100644
--- a/ext/readline/tests/libedit_callback_handler_install_001.phpt
+++ b/ext/readline/tests/libedit_callback_handler_install_001.phpt
@@ -1,5 +1,6 @@
 --TEST--
 readline_callback_handler_install(): Basic test
+lsan disabled due to a leak on ubuntu focal only.
 --EXTENSIONS--
 readline
 --SKIPIF--
@@ -8,6 +9,8 @@ if (READLINE_LIB != "libedit") die("skip libedit only");
 ?>
 --INI--
 zend.signal_check=0
+--ENV--
+LSAN_OPTIONS=detect_leaks=0
 --FILE--
 <?php
 
diff --git a/ext/readline/tests/libedit_callback_handler_remove_001.phpt b/ext/readline/tests/libedit_callback_handler_remove_001.phpt
index 0225ae732799..1c7185c1bba6 100644
--- a/ext/readline/tests/libedit_callback_handler_remove_001.phpt
+++ b/ext/readline/tests/libedit_callback_handler_remove_001.phpt
@@ -1,5 +1,6 @@
 --TEST--
 readline_callback_handler_remove(): Basic test
+lsan disabled due to a leak on ubuntu focal only.
 --EXTENSIONS--
 readline
 --SKIPIF--
@@ -8,6 +9,8 @@ if (READLINE_LIB != "libedit") die("skip libedit only");
 ?>
 --INI--
 zend.signal_check=0
+--ENV--
+LSAN_OPTIONS=detect_leaks=0
 --FILE--
 <?php