diff --git a/tools/b-test/requirements.txt b/tools/b-test/requirements.txt
index 1d0415e..9a204a0 100644
--- a/tools/b-test/requirements.txt
+++ b/tools/b-test/requirements.txt
@@ -1,6 +1,6 @@
 #
-# Copyright (c) 2020, Arm Limited and Contributors. All rights reserved.
+# Copyright (c) 2020-2023, Arm Limited and Contributors. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 
-yasha==4.4
+yasha==5.0
diff --git a/tools/b-test/run.sh.j2 b/tools/b-test/run.sh.j2
index 557c0d8..6d0f33f 100644
--- a/tools/b-test/run.sh.j2
+++ b/tools/b-test/run.sh.j2
@@ -1,6 +1,6 @@
 #!/bin/bash
 #
-# Copyright (c) 2020-2022, Arm Limited and contributors. All rights reserved.
+# Copyright (c) 2020-2023, Arm Limited and contributors. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -168,7 +168,7 @@
 	COLOR_GREEN=
 fi
 
-_ccache=$(which ccache)
+_ccache=$(which ccache 2>/dev/null) || true "never mind"
 
 case $1 in
 	{% for config in data %}