diff --git a/client/deps/hardnested.cmake b/client/deps/hardnested.cmake
index 78f763039..524d4c939 100644
--- a/client/deps/hardnested.cmake
+++ b/client/deps/hardnested.cmake
@@ -17,6 +17,7 @@ target_compile_definitions(pm3rrg_rdv4_hardnested_nosimd PRIVATE NOSIMD_BUILD)
 ## Mingw platforms: AMD64
 set(X86_CPUS x86 x86_64 i686 AMD64)
 set(ARM64_CPUS arm64 aarch64)
+set(ARM32_CPUS armel armhf)
 
 message(STATUS "CMAKE_SYSTEM_PROCESSOR := ${CMAKE_SYSTEM_PROCESSOR}")
 
@@ -118,6 +119,26 @@ elseif ("${CMAKE_SYSTEM_PROCESSOR}" IN_LIST ARM64_CPUS)
     target_compile_options(pm3rrg_rdv4_hardnested_neon PRIVATE -Wall -Werror -O3)
     set_property(TARGET pm3rrg_rdv4_hardnested_neon PROPERTY POSITION_INDEPENDENT_CODE ON)
 
+    target_include_directories(pm3rrg_rdv4_hardnested_neon PRIVATE
+            ../../common
+            ../../include
+            ../src)
+
+    set(SIMD_TARGETS
+            $<TARGET_OBJECTS:pm3rrg_rdv4_hardnested_neon>)
+elseif ("${CMAKE_SYSTEM_PROCESSOR}" IN_LIST ARM32_CPUS)
+    message(STATUS "Building optimised arm binaries")
+
+    ## arm64 / NEON
+    add_library(pm3rrg_rdv4_hardnested_neon OBJECT
+            hardnested/hardnested_bf_core.c
+            hardnested/hardnested_bitarray_core.c)
+
+    target_compile_options(pm3rrg_rdv4_hardnested_neon PRIVATE -Wall -Werror -O3)
+    target_compile_options(pm3rrg_rdv4_hardnested_neon BEFORE PRIVATE
+            -mfpu=neon)
+    set_property(TARGET pm3rrg_rdv4_hardnested_neon PROPERTY POSITION_INDEPENDENT_CODE ON)
+
     target_include_directories(pm3rrg_rdv4_hardnested_neon PRIVATE
             ../../common
             ../../include
diff --git a/client/deps/hardnested/Makefile b/client/deps/hardnested/Makefile
index a7512ec91..1667e036f 100644
--- a/client/deps/hardnested/Makefile
+++ b/client/deps/hardnested/Makefile
@@ -13,6 +13,9 @@ endif
 ifneq ($(findstring amd64, $(cpu_arch)), )
     IS_SIMD_ARCH=x86
 endif
+ifneq ($(findstring arm, $(cpu_arch)), )
+    IS_SIMD_ARCH=arm
+endif
 ifneq ($(findstring arm64, $(cpu_arch)), )
     IS_SIMD_ARCH=arm64
 endif
@@ -24,13 +27,14 @@ ifneq ($(IS_SIMD_ARCH), )
     MULTIARCHSRCS = hardnested_bf_core.c hardnested_bitarray_core.c
 endif
 ifeq ($(MULTIARCHSRCS), )
+    MYCFLAGS += -DNOSIMD_BUILD
     MYSRCS += hardnested_bf_core.c hardnested_bitarray_core.c
 endif
 
 LIB_A = libhardnested.a
 
 MYOBJS = $(MYSRCS:%.c=$(OBJDIR)/%.o)
-ifeq ($(IS_SIMD_ARCH), arm64)
+ifneq ($(findstring arm, $(IS_SIMD_ARCH)), )
 	MYOBJS += $(MULTIARCHSRCS:%.c=$(OBJDIR)/%_NOSIMD.o) \
 				$(MULTIARCHSRCS:%.c=$(OBJDIR)/%_NEON.o)
 else
@@ -54,6 +58,11 @@ ifeq ($(IS_SIMD_ARCH), arm64)
 	SUPPORTS_AVX512=False
 	HARD_SWITCH_NOSIMD = -DNOSIMD_BUILD
 endif
+ifeq ($(IS_SIMD_ARCH), arm)
+	SUPPORTS_AVX512=False
+	HARD_SWITCH_NEON = -mfpu=neon
+	HARD_SWITCH_NOSIMD = -DNOSIMD_BUILD
+endif
 ifeq "$(SUPPORTS_AVX512)" "True"
     HARD_SWITCH_NOSIMD += -mno-avx512f
     HARD_SWITCH_MMX += -mno-avx512f