diff --git a/tools/ci.sh b/tools/ci.sh
index 5ce742b01b..efa492bd19 100755
--- a/tools/ci.sh
+++ b/tools/ci.sh
@@ -249,6 +249,7 @@ function ci_qemu_arm_build {
 
 function ci_renesas_ra_setup {
     ci_gcc_arm_setup
+    sudo apt-get install protobuf-c-compiler
 }
 
 function ci_renesas_ra_board_build {
@@ -259,6 +260,8 @@ function ci_renesas_ra_board_build {
     make ${MAKEOPTS} -C ports/renesas-ra BOARD=EK_RA6M1
     make ${MAKEOPTS} -C ports/renesas-ra BOARD=EK_RA4M1
     make ${MAKEOPTS} -C ports/renesas-ra BOARD=EK_RA4W1
+    make ${MAKEOPTS} -C ports/renesas-ra BOARD=ARDUINO_PORTENTA_C33 submodules
+    make ${MAKEOPTS} -C ports/renesas-ra BOARD=ARDUINO_PORTENTA_C33
 }
 
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