diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index bc6a0543..490c349b 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -511,7 +511,7 @@ jobs:
       - uses: actions/checkout@v4
         with: { fetch-depth: 2 }
       - run: sudo apt -y update && sudo apt -y install gcc-arm-none-eabi
-      - run: make -C examples/zephyr init
+      - run: make -C examples/zephyr init REPO=zephyrprojectrtos/ci:v.0.26.14 # "no space left on device" with newers
       - name: minify manifest
         uses: mikefarah/yq@master
         with:
diff --git a/examples/zephyr/Makefile b/examples/zephyr/Makefile
index 4130cafd..937442b9 100644
--- a/examples/zephyr/Makefile
+++ b/examples/zephyr/Makefile
@@ -7,6 +7,7 @@ DOCKER_ZEPHYR_PATH = $(DOCKER_PROJECT_DIR)/$(ZEPHYR_DIR)
 
 DOCKER ?= docker run --rm -v $(PROJECT_PATH):$(DOCKER_PROJECT_PATH) -v $(ZEPHYR_PATH):$(DOCKER_ZEPHYR_PATH)
 REPO ?= zephyrprojectrtos/ci
+REVNO ?= --mr v3.7-branch
 
 YQ ?= yq
 
@@ -18,7 +19,7 @@ clean:
 init:
 ifeq ($(wildcard $(ZEPHYR_PATH)/.*),)
 	mkdir $(ZEPHYR_PATH)
-	$(DOCKER) $(REPO) /bin/sh -c 'cd $(DOCKER_PROJECT_DIR) && west init ./$(ZEPHYR_DIR)'
+	$(DOCKER) $(REPO) /bin/sh -c 'cd $(DOCKER_PROJECT_DIR) && west init $(REVNO) ./$(ZEPHYR_DIR)'
 endif
 
 update:
diff --git a/examples/zephyr/device-dashboard/prj.conf b/examples/zephyr/device-dashboard/prj.conf
index 0b93e5da..2bf929d5 100644
--- a/examples/zephyr/device-dashboard/prj.conf
+++ b/examples/zephyr/device-dashboard/prj.conf
@@ -5,9 +5,9 @@ CONFIG_NET_TCP=y
 CONFIG_NET_UDP=y
 CONFIG_NET_DHCPV4=y
 CONFIG_NET_SOCKETS=y
-CONFIG_NET_SOCKETS_POLL_MAX=32
+CONFIG_NET_SOCKETS_POLL_MAX=16
 CONFIG_POSIX_API=y
-CONFIG_POSIX_MAX_FDS=32
+CONFIG_ZVFS_OPEN_MAX=32
 CONFIG_NET_MAX_CONN=10
 CONFIG_NET_MAX_CONTEXTS=10
 CONFIG_NET_CONFIG_SETTINGS=y
diff --git a/examples/zephyr/http-client/prj.conf b/examples/zephyr/http-client/prj.conf
index 6df5b4ee..e9cf55f5 100644
--- a/examples/zephyr/http-client/prj.conf
+++ b/examples/zephyr/http-client/prj.conf
@@ -5,9 +5,9 @@ CONFIG_NET_TCP=y
 CONFIG_NET_UDP=y
 CONFIG_NET_DHCPV4=y
 CONFIG_NET_SOCKETS=y
-CONFIG_NET_SOCKETS_POLL_MAX=32
+CONFIG_NET_SOCKETS_POLL_MAX=16
 CONFIG_POSIX_API=y
-CONFIG_POSIX_MAX_FDS=32
+CONFIG_ZVFS_OPEN_MAX=32
 CONFIG_NET_CONFIG_SETTINGS=y
 CONFIG_NET_CONNECTION_MANAGER=y
 CONFIG_NET_LOG=y
diff --git a/examples/zephyr/http-server/prj.conf b/examples/zephyr/http-server/prj.conf
index c8042e8e..593476fc 100644
--- a/examples/zephyr/http-server/prj.conf
+++ b/examples/zephyr/http-server/prj.conf
@@ -5,9 +5,9 @@ CONFIG_NET_TCP=y
 CONFIG_NET_UDP=y
 CONFIG_NET_DHCPV4=y
 CONFIG_NET_SOCKETS=y
-CONFIG_NET_SOCKETS_POLL_MAX=32
+CONFIG_NET_SOCKETS_POLL_MAX=16
 CONFIG_POSIX_API=y
-CONFIG_POSIX_MAX_FDS=32
+CONFIG_ZVFS_OPEN_MAX=32
 CONFIG_NET_CONFIG_SETTINGS=y
 CONFIG_NET_CONNECTION_MANAGER=y
 CONFIG_NET_LOG=y
diff --git a/examples/zephyr/mqtt-aws-client/prj.conf b/examples/zephyr/mqtt-aws-client/prj.conf
index 974bd1a8..4643640b 100644
--- a/examples/zephyr/mqtt-aws-client/prj.conf
+++ b/examples/zephyr/mqtt-aws-client/prj.conf
@@ -5,9 +5,9 @@ CONFIG_NET_TCP=y
 CONFIG_NET_UDP=y
 CONFIG_NET_DHCPV4=y
 CONFIG_NET_SOCKETS=y
-CONFIG_NET_SOCKETS_POLL_MAX=32
+CONFIG_NET_SOCKETS_POLL_MAX=16
 CONFIG_POSIX_API=y
-CONFIG_POSIX_MAX_FDS=32
+CONFIG_ZVFS_OPEN_MAX=32
 CONFIG_NET_CONFIG_SETTINGS=y
 CONFIG_NET_CONNECTION_MANAGER=y
 CONFIG_NET_LOG=y
diff --git a/examples/zephyr/websocket-server/prj.conf b/examples/zephyr/websocket-server/prj.conf
index c8042e8e..593476fc 100644
--- a/examples/zephyr/websocket-server/prj.conf
+++ b/examples/zephyr/websocket-server/prj.conf
@@ -5,9 +5,9 @@ CONFIG_NET_TCP=y
 CONFIG_NET_UDP=y
 CONFIG_NET_DHCPV4=y
 CONFIG_NET_SOCKETS=y
-CONFIG_NET_SOCKETS_POLL_MAX=32
+CONFIG_NET_SOCKETS_POLL_MAX=16
 CONFIG_POSIX_API=y
-CONFIG_POSIX_MAX_FDS=32
+CONFIG_ZVFS_OPEN_MAX=32
 CONFIG_NET_CONFIG_SETTINGS=y
 CONFIG_NET_CONNECTION_MANAGER=y
 CONFIG_NET_LOG=y
diff --git a/test/wizard/test.sh b/test/wizard/test.sh
index bd81a90f..e101fe38 100755
--- a/test/wizard/test.sh
+++ b/test/wizard/test.sh
@@ -78,14 +78,15 @@ for board in $ESP; do
 	dotest $board "ESP-IDF" "baremetal"
 done
 
-
-ZEPHYR="f207 f429 f746 f756 f767 h563 h573 h723 h735 h743 h745 h747 h753 h755 mcxn947 rt1060 rt1064 evb-pico"
+# h755 not supported in 3.7.0 branch; master branch currently not building
+# other ST boards (PHY address != 0) might build and not work
+ZEPHYR="f207 f429 f746 f756 f767 h563 h573 h723 h735 h743 h745 h747 h753 mcxn947 rt1060 rt1064 evb-pico"
 for board in $ZEPHYR; do
-	echo dotest $board "Zephyr" "baremetal"
+	dotest $board "Zephyr" "baremetal"
 done
 
 
 ARDUINO="teensy41"
 
-rm -rf workspace pico-sdk
+rm -rf workspace pico-sdk mcuxpresso .cache .eclipse .p2 build
 cd -
diff --git a/test/zephyr/Makefile b/test/zephyr/Makefile
new file mode 100644
index 00000000..e678be86
--- /dev/null
+++ b/test/zephyr/Makefile
@@ -0,0 +1,47 @@
+ROOT ?= $(realpath $(CURDIR)/../..)
+ZEPHYR_DIR ?= $(ROOT)/examples/zephyr/zephyrproject
+DOCKER ?= docker run --rm -v $(ROOT):$(ROOT) -w $(CURDIR)/wizard
+IMAGE ?= zephyrprojectrtos/ci
+REVNO ?= --mr v3.7-branch
+YQ ?= $(DOCKER) --user="root" mikefarah/yq
+
+all: zephyr $(PROJECTS)
+	rm -rf build
+
+$(PROJECTS): FORCE
+	$(DOCKER) -e ZEPHYR_BASE=$(ZEPHYR_DIR)/zephyr $(IMAGE) west build -b $(ZBNAME) -p auto $(realpath $@)
+
+FORCE:
+
+zephyr: init minify update
+
+init: FORCE
+	test -d $(ZEPHYR_DIR) || ( mkdir -p $(ZEPHYR_DIR) ; \
+	$(DOCKER) $(IMAGE) west init $(REVNO) $(ZEPHYR_DIR))
+
+update: FORCE
+	$(DOCKER) $(IMAGE) /bin/sh -c 'cd $(ZEPHYR_DIR) && west update'
+
+minify: FORCE
+	$(YQ) -i eval '(.manifest.defaults, .manifest.remotes, .manifest.projects[] | select(.name == "cmsis" or .name == "hal_stm32" or .name == "hal_nxp" or .name == "hal_espressif" or .name == "hal_rpi_pico" or .name == "segger" or .name == "mbedtls" or .name == "mcuboot" or .name == "picolibc" | del(.null) ), .manifest.self) as $$i ireduce({};setpath($$i | path; $$i)) | del(.manifest.projects.[].null) | del(..|select(length==0))' $(ZEPHYR_DIR)/zephyr/west.yml
+
+
+Z_f207 := nucleo_f207zg
+Z_f429 := nucleo_f429zi
+Z_f746 := nucleo_f746zg
+Z_f756 := nucleo_f756zg
+Z_f767 := nucleo_f767zi
+Z_h563 := nucleo_h563zi
+Z_h573 := stm32h573i_dk
+Z_h723 := nucleo_h723zg
+Z_h735 := stm32h735g_disco
+Z_h743 := nucleo_h743zi
+Z_h745 := stm32h745i_disco/stm32h745xx/m7
+Z_h747 := stm32h747i_disco/stm32h747xx/m7
+Z_h753 := nucleo_h753zi
+Z_h755 := nucleo_h755zi_q/stm32h755xx/m7
+Z_mcxn947 := frdm_mcxn947/mcxn947/cpu0
+Z_rt1060 := mimxrt1060_evk
+Z_rt1064 := mimxrt1064_evk
+Z_evb-pico := w5500_evb_pico
+ZBNAME = $(Z_$(BOARD))