diff --git a/support/dependencies/dependencies.sh b/support/dependencies/dependencies.sh
index 89ed3c9df9..70e951a7e6 100755
--- a/support/dependencies/dependencies.sh
+++ b/support/dependencies/dependencies.sh
@@ -290,6 +290,10 @@ required_perl_modules="$required_perl_modules ExtUtils::MakeMaker" # Used by hos
 required_perl_modules="$required_perl_modules Thread::Queue" # Used by host-automake
 required_perl_modules="$required_perl_modules FindBin" # Used by (host-)libopenssl
 
+if grep -q ^BR2_PACKAGE_MOSH=y $BR2_CONFIG ; then
+    required_perl_modules="$required_perl_modules diagnostics"
+fi
+
 if grep -q ^BR2_PACKAGE_MPV=y $BR2_CONFIG ; then
     required_perl_modules="$required_perl_modules Math::BigInt"
     required_perl_modules="$required_perl_modules Math::BigRat"