diff --git a/tools/ci.sh b/tools/ci.sh
index eb658400b4..098efbf9a2 100755
--- a/tools/ci.sh
+++ b/tools/ci.sh
@@ -508,6 +508,8 @@ function ci_stm32_path {
 }
 
 function ci_stm32_pyb_build {
+    # This function builds the following MCU families: F4, F7.
+
     make ${MAKEOPTS} -C mpy-cross
     make ${MAKEOPTS} -C ports/stm32 MICROPY_PY_NETWORK_WIZNET5K=5200 submodules
     make ${MAKEOPTS} -C ports/stm32 BOARD=PYBD_SF2 submodules
@@ -522,6 +524,8 @@ function ci_stm32_pyb_build {
 }
 
 function ci_stm32_nucleo_build {
+    # This function builds the following MCU families: F0, H5, H7, L0, L4, WB.
+
     make ${MAKEOPTS} -C mpy-cross
     make ${MAKEOPTS} -C ports/stm32 BOARD=NUCLEO_H743ZI submodules
     git submodule update --init lib/mynewt-nimble
@@ -548,9 +552,17 @@ function ci_stm32_nucleo_build {
 }
 
 function ci_stm32_misc_build {
+    # This function builds the following MCU families: G0, G4, H7, L1, N6, U5, WL.
+
     make ${MAKEOPTS} -C mpy-cross
     make ${MAKEOPTS} -C ports/stm32 BOARD=ARDUINO_GIGA submodules
     make ${MAKEOPTS} -C ports/stm32 BOARD=ARDUINO_GIGA
+    make ${MAKEOPTS} -C ports/stm32 BOARD=NUCLEO_G0B1RE
+    make ${MAKEOPTS} -C ports/stm32 BOARD=NUCLEO_G474RE
+    make ${MAKEOPTS} -C ports/stm32 BOARD=NUCLEO_L152RE
+    make ${MAKEOPTS} -C ports/stm32 BOARD=NUCLEO_N657X0
+    make ${MAKEOPTS} -C ports/stm32 BOARD=NUCLEO_U5A5ZJ_Q
+    make ${MAKEOPTS} -C ports/stm32 BOARD=NUCLEO_WL55
 }
 
 ########################################################################################