diff --git a/.devcontainer/cortex-m-toolchain.sh b/.devcontainer/cortex-m-toolchain.sh
index de1ccde62742a..782b472fec2e2 100755
--- a/.devcontainer/cortex-m-toolchain.sh
+++ b/.devcontainer/cortex-m-toolchain.sh
@@ -14,10 +14,10 @@ echo -e "[cortex-m-toolchain.sh] downloading and installing gcc-arm-non-eabi too
 cd /workspaces
 
 wget -qO gcc-arm-none-eabi.tar.xz \
-  https://developer.arm.com/-/media/Files/downloads/gnu/13.2.rel1/binrel/arm-gnu-toolchain-13.2.rel1-x86_64-arm-none-eabi.tar.xz
+  https://developer.arm.com/-/media/Files/downloads/gnu/13.2.rel1/binrel/arm-gnu-toolchain-14.2.rel1-x86_64-arm-none-eabi.tar.xz
 
 tar -xJf gcc-arm-none-eabi.tar.xz
-ln -s arm-gnu-toolchain-13.2.Rel1-x86_64-arm-none-eabi gcc-arm-none-eabi
+ln -s arm-gnu-toolchain-14.2.Rel1-x86_64-arm-none-eabi gcc-arm-none-eabi
 rm -f gcc-arm-none-eabi.tar.xz
 
 echo -e "[cortex-m-toolchain.sh] update PATH in environment"
diff --git a/.github/actions/deps/external/action.yml b/.github/actions/deps/external/action.yml
index 0b1444a820da2..10aace1134ec5 100644
--- a/.github/actions/deps/external/action.yml
+++ b/.github/actions/deps/external/action.yml
@@ -27,7 +27,7 @@ runs:
       uses: carlosperate/arm-none-eabi-gcc-action@v1
       with:
         # When changing this update what Windows grabs too!
-        release: '13.2.Rel1'
+        release: '14.2.Rel1'
 
     # espressif
     - name: Get espressif toolchain
diff --git a/.github/actions/deps/ports/broadcom/action.yml b/.github/actions/deps/ports/broadcom/action.yml
index f936f8e7edfde..9ad0e361bda1b 100644
--- a/.github/actions/deps/ports/broadcom/action.yml
+++ b/.github/actions/deps/ports/broadcom/action.yml
@@ -5,8 +5,8 @@ runs:
   steps:
     - name: Get broadcom toolchain
       run: |
-        wget --no-verbose https://adafruit-circuit-python.s3.amazonaws.com/arm-gnu-toolchain-13.3.rel1-x86_64-aarch64-none-elf.tar.xz
-        sudo tar -C /usr --strip-components=1 -xaf arm-gnu-toolchain-13.3.rel1-x86_64-aarch64-none-elf.tar.xz
+        wget --no-verbose https://adafruit-circuit-python.s3.amazonaws.com/arm-gnu-toolchain-14.2.rel1-x86_64-aarch64-none-elf.tar.xz
+        sudo tar -C /usr --strip-components=1 -xaf arm-gnu-toolchain-14.2.rel1-x86_64-aarch64-none-elf.tar.xz
         sudo apt-get update
         sudo apt-get install -y mtools
       shell: bash
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index eb6a9a0c26325..0f837d793bddc 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -261,9 +261,9 @@ jobs:
         python3 -c "import sys, locale; print(sys.getdefaultencoding(), locale.getpreferredencoding(False))"
     - name: Install dependencies
       run: |
-        wget --no-verbose -O gcc-arm.zip https://developer.arm.com/-/media/Files/downloads/gnu/13.2.rel1/binrel/arm-gnu-toolchain-13.2.rel1-mingw-w64-i686-arm-none-eabi.zip
-        unzip -q -d /tmp gcc-arm.zip
-        tar -C /tmp/arm-gnu-toolchain* -cf - . | tar -C /usr/local -xf -
+        wget --no-verbose -O gcc-arm.zip https://developer.arm.com/-/media/Files/downloads/gnu/14.2.rel1/binrel/arm-gnu-toolchain-14.2.rel1-mingw-w64-i686-arm-none-eabi.zip
+        unzip -q -d /tmp/arm-gnu-toolchain gcc-arm.zip
+        tar -C /tmp/arm-gnu-toolchain -cf - . | tar -C /usr/local -xf -
         # We could use a venv instead, but that requires entering the venv on each run step
         # that runs in its own shell. There are some actions that help with that, but not for msys2
         # that I can find. (dhalbert)
diff --git a/ports/broadcom/mpconfigport.mk b/ports/broadcom/mpconfigport.mk
index b4b3e2ebf8192..d906b5d2aa467 100644
--- a/ports/broadcom/mpconfigport.mk
+++ b/ports/broadcom/mpconfigport.mk
@@ -27,7 +27,7 @@ USB_HIGHSPEED = 1
 CIRCUITPY_BUILD_EXTENSIONS ?= disk.img.zip,kernel8.img
 
 ifeq ($(CHIP_VARIANT), "bcm2711")
-CIRCUITPY_MIN_GCC_VERSION ?= 10
+CIRCUITPY_MIN_GCC_VERSION ?= 14
 else ifeq ($(CHIP_VARIANT), "bcm2837")
-CIRCUITPY_MIN_GCC_VERSION ?= 10
+CIRCUITPY_MIN_GCC_VERSION ?= 14
 endif
diff --git a/py/circuitpy_mpconfig.h b/py/circuitpy_mpconfig.h
index d6658867b7d1d..bc894e98606eb 100644
--- a/py/circuitpy_mpconfig.h
+++ b/py/circuitpy_mpconfig.h
@@ -639,7 +639,7 @@ void background_callback_run_all(void);
 #define MICROPY_PY_BUILTINS_COMPILE (1)
 
 #ifndef CIRCUITPY_MIN_GCC_VERSION
-#define CIRCUITPY_MIN_GCC_VERSION 13
+#define CIRCUITPY_MIN_GCC_VERSION 14
 #endif
 
 #ifndef CIRCUITPY_SAVES_PARTITION_SIZE
diff --git a/py/circuitpy_mpconfig.mk b/py/circuitpy_mpconfig.mk
index b081e0f52dbde..6ddac5eeccd8c 100644
--- a/py/circuitpy_mpconfig.mk
+++ b/py/circuitpy_mpconfig.mk
@@ -719,7 +719,7 @@ CIRCUITPY_SWO_TRACE ?= 0
 CFLAGS += -DCIRCUITPY_SWO_TRACE=$(CIRCUITPY_SWO_TRACE)
 
 # Check for a minimum GCC version during build (set to 0 to disable)
-CIRCUITPY_MIN_GCC_VERSION ?= 13
+CIRCUITPY_MIN_GCC_VERSION ?= 14
 CFLAGS += -DCIRCUITPY_MIN_GCC_VERSION=$(CIRCUITPY_MIN_GCC_VERSION)
 
 # Define an equivalent for MICROPY_LONGINT_IMPL, to pass to $(MPY-TOOL) in py/mkrules.mk