diff --git a/extmod/ulab b/extmod/ulab
index 8242b84753..aa7e741530 160000
--- a/extmod/ulab
+++ b/extmod/ulab
@@ -1 +1 @@
-Subproject commit 8242b84753355433b61230ab6631c06e5ac77f35
+Subproject commit aa7e741530df471d206a4a321823a37a913a0eb8
diff --git a/locale/circuitpython.pot b/locale/circuitpython.pot
index ec232615d1..c184d69313 100644
--- a/locale/circuitpython.pot
+++ b/locale/circuitpython.pot
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2020-11-10 15:30+0530\n"
+"POT-Creation-Date: 2020-11-23 10:10-0600\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -855,6 +855,10 @@ msgstr ""
 msgid "FFT is defined for ndarrays only"
 msgstr ""
 
+#: extmod/ulab/code/fft/fft.c
+msgid "FFT is implemented for linear arrays only"
+msgstr ""
+
 #: ports/esp32s2/common-hal/socketpool/Socket.c
 msgid "Failed SSL handshake"
 msgstr ""
@@ -1951,7 +1955,7 @@ msgstr ""
 msgid "WARNING: Your code filename has two extensions\n"
 msgstr ""
 
-#: shared-bindings/watchdog/WatchDogTimer.c
+#: ports/nrf/common-hal/watchdog/WatchDogTimer.c
 msgid "WatchDogTimer cannot be deinitialized once mode is set to RESET"
 msgstr ""
 
@@ -2030,10 +2034,6 @@ msgstr ""
 msgid "addresses is empty"
 msgstr ""
 
-#: extmod/ulab/code/vector/vectorise.c
-msgid "arctan2 is implemented for scalars and ndarrays only"
-msgstr ""
-
 #: py/modbuiltins.c
 msgid "arg is an empty sequence"
 msgstr ""
@@ -2042,6 +2042,10 @@ msgstr ""
 msgid "argsort argument must be an ndarray"
 msgstr ""
 
+#: extmod/ulab/code/numerical/numerical.c
+msgid "argsort is not implemented for flattened arrays"
+msgstr ""
+
 #: py/runtime.c
 msgid "argument has wrong type"
 msgstr ""
@@ -2059,14 +2063,22 @@ msgstr ""
 msgid "argument should be a '%q' not a '%q'"
 msgstr ""
 
-#: extmod/ulab/code/linalg/linalg.c
+#: extmod/ulab/code/linalg/linalg.c extmod/ulab/code/numerical/numerical.c
 msgid "arguments must be ndarrays"
 msgstr ""
 
+#: extmod/ulab/code/ndarray.c
+msgid "array and index length must be equal"
+msgstr ""
+
 #: py/objarray.c shared-bindings/nvm/ByteArray.c
 msgid "array/bytes required on right side"
 msgstr ""
 
+#: extmod/ulab/code/numerical/numerical.c
+msgid "attempt to get (arg)min/(arg)max of empty sequence"
+msgstr ""
+
 #: extmod/ulab/code/numerical/numerical.c
 msgid "attempt to get argmin/argmax of an empty sequence"
 msgstr ""
@@ -2076,15 +2088,15 @@ msgid "attributes not supported yet"
 msgstr ""
 
 #: extmod/ulab/code/numerical/numerical.c
-msgid "axis must be -1, 0, None, or 1"
+msgid "axis is out of bounds"
 msgstr ""
 
 #: extmod/ulab/code/numerical/numerical.c
-msgid "axis must be -1, 0, or 1"
+msgid "axis must be None, or an integer"
 msgstr ""
 
 #: extmod/ulab/code/numerical/numerical.c
-msgid "axis must be None, 0, or 1"
+msgid "axis too long"
 msgstr ""
 
 #: py/builtinevex.c
@@ -2288,6 +2300,10 @@ msgid ""
 "can't switch from manual field specification to automatic field numbering"
 msgstr ""
 
+#: extmod/ulab/code/ndarray_operators.c
+msgid "cannot cast output with casting rule"
+msgstr ""
+
 #: py/objtype.c
 msgid "cannot create '%q' instances"
 msgstr ""
@@ -2304,10 +2320,6 @@ msgstr ""
 msgid "cannot perform relative import"
 msgstr ""
 
-#: extmod/ulab/code/ndarray.c
-msgid "cannot reshape array (incompatible input/output shape)"
-msgstr ""
-
 #: py/emitnative.c
 msgid "casting"
 msgstr ""
@@ -2380,10 +2392,6 @@ msgstr ""
 msgid "convolve arguments must not be empty"
 msgstr ""
 
-#: extmod/ulab/code/ndarray.c
-msgid "could not broadast input array from shape"
-msgstr ""
-
 #: extmod/ulab/code/poly/poly.c
 msgid "could not invert Vandermonde matrix"
 msgstr ""
@@ -2392,6 +2400,10 @@ msgstr ""
 msgid "couldn't determine SD card version"
 msgstr ""
 
+#: extmod/ulab/code/numerical/numerical.c
+msgid "cross is defined for 1D arrays of length 3"
+msgstr ""
+
 #: extmod/ulab/code/approx/approx.c
 msgid "data must be iterable"
 msgstr ""
@@ -2400,10 +2412,6 @@ msgstr ""
 msgid "data must be of equal length"
 msgstr ""
 
-#: extmod/ulab/code/numerical/numerical.c
-msgid "ddof must be smaller than length of data set"
-msgstr ""
-
 #: py/parsenum.c
 msgid "decimal numbers not supported"
 msgstr ""
@@ -2433,6 +2441,10 @@ msgstr ""
 msgid "diff argument must be an ndarray"
 msgstr ""
 
+#: extmod/ulab/code/numerical/numerical.c
+msgid "differentiation order out of range"
+msgstr ""
+
 #: py/modmath.c py/objfloat.c py/objint_longlong.c py/objint_mpz.c py/runtime.c
 #: shared-bindings/math/__init__.c
 msgid "division by zero"
@@ -2548,6 +2560,10 @@ msgstr ""
 msgid "first argument must be a function"
 msgstr ""
 
+#: extmod/ulab/code/ulab_create.c
+msgid "first argument must be a tuple of ndarrays"
+msgstr ""
+
 #: extmod/ulab/code/ndarray.c
 msgid "first argument must be an iterable"
 msgstr ""
@@ -2601,8 +2617,8 @@ msgstr ""
 msgid "function has the same sign at the ends of interval"
 msgstr ""
 
-#: extmod/ulab/code/compare/compare.c
-msgid "function is implemented for scalars and ndarrays only"
+#: extmod/ulab/code/ndarray.c
+msgid "function is defined for ndarrays only"
 msgstr ""
 
 #: py/argcheck.c
@@ -2672,6 +2688,7 @@ msgstr ""
 msgid "index is out of bounds"
 msgstr ""
 
+#: extmod/ulab/code/numerical/numerical.c
 #: ports/esp32s2/common-hal/pulseio/PulseIn.c py/obj.c
 msgid "index out of range"
 msgstr ""
@@ -2696,6 +2713,10 @@ msgstr ""
 msgid "inline assembler must be a function"
 msgstr ""
 
+#: extmod/ulab/code/ndarray.c
+msgid "input and output shapes are not compatible"
+msgstr ""
+
 #: extmod/ulab/code/ulab_create.c
 msgid "input argument must be an integer or a 2-tuple"
 msgstr ""
@@ -2704,6 +2725,10 @@ msgstr ""
 msgid "input array length must be power of 2"
 msgstr ""
 
+#: extmod/ulab/code/ulab_create.c
+msgid "input arrays are not compatible"
+msgstr ""
+
 #: extmod/ulab/code/poly/poly.c
 msgid "input data must be an iterable"
 msgstr ""
@@ -2716,6 +2741,22 @@ msgstr ""
 msgid "input matrix is singular"
 msgstr ""
 
+#: extmod/ulab/code/user/user.c
+msgid "input must be a dense ndarray"
+msgstr ""
+
+#: extmod/ulab/code/ulab_create.c
+msgid "input must be a tensor of rank 2"
+msgstr ""
+
+#: extmod/ulab/code/ulab_create.c extmod/ulab/code/user/user.c
+msgid "input must be an ndarray"
+msgstr ""
+
+#: extmod/ulab/code/filter/filter.c
+msgid "input must be one-dimensional"
+msgstr ""
+
 #: extmod/ulab/code/linalg/linalg.c
 msgid "input must be square matrix"
 msgstr ""
@@ -2728,6 +2769,10 @@ msgstr ""
 msgid "input vectors must be of equal length"
 msgstr ""
 
+#: extmod/ulab/code/poly/poly.c
+msgid "inputs are not iterable"
+msgstr ""
+
 #: py/parsenum.c
 msgid "int() arg 2 must be >= 2 and <= 36"
 msgstr ""
@@ -2896,6 +2941,10 @@ msgstr ""
 msgid "max_length must be > 0"
 msgstr ""
 
+#: extmod/ulab/code/ndarray.c
+msgid "maximum number of dimensions is 4"
+msgstr ""
+
 #: py/runtime.c
 msgid "maximum recursion depth exceeded"
 msgstr ""
@@ -2945,10 +2994,6 @@ msgstr ""
 msgid "must use keyword argument for key function"
 msgstr ""
 
-#: extmod/ulab/code/numerical/numerical.c
-msgid "n must be between 0, and 9"
-msgstr ""
-
 #: py/runtime.c
 msgid "name '%q' is not defined"
 msgstr ""
@@ -3031,6 +3076,10 @@ msgstr ""
 msgid "non-keyword arg after keyword arg"
 msgstr ""
 
+#: extmod/ulab/code/linalg/linalg.c
+msgid "norm is defined for 1D and 2D arrays"
+msgstr ""
+
 #: shared-bindings/_bleio/UUID.c
 msgid "not a 128-bit UUID"
 msgstr ""
@@ -3043,10 +3092,6 @@ msgstr ""
 msgid "not enough arguments for format string"
 msgstr ""
 
-#: extmod/ulab/code/poly/poly.c
-msgid "number of arguments must be 2, or 3"
-msgstr ""
-
 #: extmod/ulab/code/ulab_create.c
 msgid "number of points must be at least 2"
 msgstr ""
@@ -3099,6 +3144,10 @@ msgstr ""
 msgid "odd-length string"
 msgstr ""
 
+#: extmod/ulab/code/ulab_create.c
+msgid "offset is too large"
+msgstr ""
+
 #: py/objstr.c py/objstrunicode.c
 msgid "offset out of bounds"
 msgstr ""
@@ -3121,6 +3170,14 @@ msgstr ""
 msgid "operands could not be broadcast together"
 msgstr ""
 
+#: extmod/ulab/code/ndarray.c
+msgid "operation is implemented for 1D Boolean arrays only"
+msgstr ""
+
+#: extmod/ulab/code/numerical/numerical.c
+msgid "operation is not implemented for flattened array"
+msgstr ""
+
 #: extmod/ulab/code/numerical/numerical.c
 msgid "operation is not implemented on ndarrays"
 msgstr ""
@@ -3255,6 +3312,10 @@ msgstr ""
 msgid "requested length %d but object has length %d"
 msgstr ""
 
+#: extmod/ulab/code/ndarray_operators.c
+msgid "results cannot be cast to specified type"
+msgstr ""
+
 #: py/compile.c
 msgid "return annotation must be an identifier"
 msgstr ""
@@ -3273,8 +3334,8 @@ msgstr ""
 msgid "rgb_pins[%d] is not on the same port as clock"
 msgstr ""
 
-#: extmod/ulab/code/ndarray.c
-msgid "right hand side must be an ndarray, or a scalar"
+#: extmod/ulab/code/numerical/numerical.c
+msgid "roll argument must be an ndarray"
 msgstr ""
 
 #: py/objstr.c
@@ -3300,7 +3361,7 @@ msgid "script compilation not supported"
 msgstr ""
 
 #: extmod/ulab/code/ndarray.c
-msgid "shape must be a 2-tuple"
+msgid "shape must be a tuple"
 msgstr ""
 
 #: py/objstr.c
@@ -3343,10 +3404,6 @@ msgstr ""
 msgid "sort argument must be an ndarray"
 msgstr ""
 
-#: extmod/ulab/code/numerical/numerical.c
-msgid "sorted axis can't be longer than 65535"
-msgstr ""
-
 #: extmod/ulab/code/filter/filter.c
 msgid "sos array must be of shape (n_section, 6)"
 msgstr ""
@@ -3452,6 +3509,10 @@ msgstr ""
 msgid "timestamp out of range for platform time_t"
 msgstr ""
 
+#: extmod/ulab/code/ndarray.c
+msgid "tobytes can be invoked for dense arrays only"
+msgstr ""
+
 #: shared-module/struct/__init__.c
 msgid "too many arguments provided with the given format"
 msgstr ""
@@ -3627,12 +3688,12 @@ msgstr ""
 msgid "window must be <= interval"
 msgstr ""
 
-#: extmod/ulab/code/linalg/linalg.c
-msgid "wrong argument type"
+#: extmod/ulab/code/numerical/numerical.c
+msgid "wrong axis index"
 msgstr ""
 
-#: extmod/ulab/code/ndarray.c
-msgid "wrong index type"
+#: extmod/ulab/code/ulab_create.c
+msgid "wrong axis specified"
 msgstr ""
 
 #: extmod/ulab/code/vector/vectorise.c
diff --git a/ports/stm/boards/meowbit_v121/mpconfigboard.mk b/ports/stm/boards/meowbit_v121/mpconfigboard.mk
index c416700e3c..86b0cb5ab4 100644
--- a/ports/stm/boards/meowbit_v121/mpconfigboard.mk
+++ b/ports/stm/boards/meowbit_v121/mpconfigboard.mk
@@ -20,3 +20,5 @@ LD_COMMON = boards/common_default.ld
 LD_FILE = boards/STM32F401xe_boot.ld
 # For debugging - also comment BOOTLOADER_OFFSET and BOARD_VTOR_DEFER
 # LD_FILE = boards/STM32F401xe_fs.ld
+
+CIRCUITPY_ULAB = 0
diff --git a/ports/stm/boards/thunderpack/mpconfigboard.mk b/ports/stm/boards/thunderpack/mpconfigboard.mk
index d303582e0e..8f645068d7 100644
--- a/ports/stm/boards/thunderpack/mpconfigboard.mk
+++ b/ports/stm/boards/thunderpack/mpconfigboard.mk
@@ -15,3 +15,5 @@ MCU_PACKAGE = UFQFPN48
 
 LD_COMMON = boards/common_nvm.ld
 LD_FILE = boards/STM32F411_nvm.ld
+
+CIRCUITPY_ULAB = 0
diff --git a/py/py.mk b/py/py.mk
index eeb3b8650f..1a8f1219a5 100644
--- a/py/py.mk
+++ b/py/py.mk
@@ -109,7 +109,7 @@ ifeq ($(CIRCUITPY_ULAB),1)
 SRC_MOD += $(patsubst $(TOP)/%,%,$(wildcard $(TOP)/extmod/ulab/code/*.c))
 SRC_MOD += $(patsubst $(TOP)/%,%,$(wildcard $(TOP)/extmod/ulab/code/*/*.c))
 CFLAGS_MOD += -DCIRCUITPY_ULAB=1 -DMODULE_ULAB_ENABLED=1
-$(BUILD)/extmod/ulab/code/%.o: CFLAGS += -Wno-float-equal -Wno-sign-compare -DCIRCUITPY
+$(BUILD)/extmod/ulab/code/%.o: CFLAGS += -Wno-missing-declarations -Wno-missing-prototypes -Wno-unused-parameter -Wno-float-equal -Wno-sign-compare -Wno-cast-align -Wno-shadow -DCIRCUITPY
 endif
 
 # External modules written in C.