diff --git a/Makefile b/Makefile
index 18c59a8da..1af1575f5 100644
--- a/Makefile
+++ b/Makefile
@@ -16,11 +16,16 @@ endif
 IS_RELEASE := $(if $(or $(EMULATE_READER),$(WIN32)),,1)
 IS_RELEASE := $(if $(or $(IS_RELEASE),$(APPIMAGE),$(DEBIAN),$(MACOS)),1,)
 
-ANDROID_ARCH?=arm
-ifeq ($(ANDROID_ARCH), x86)
-	ANDROID_ABI:=$(ANDROID_ARCH)
+ifeq ($(ANDROID_ARCH), arm64)
+	ANDROID_ABI?=arm64-v8a
+else ifeq ($(ANDROID_ARCH), x86)
+	ANDROID_ABI?=$(ANDROID_ARCH)
+else ifeq ($(ANDROID_ARCH), x86_64)
+	ANDROID_ABI?=$(ANDROID_ARCH)
+else
+	ANDROID_ARCH?=arm
+	ANDROID_ABI?=armeabi-v7a
 endif
-ANDROID_ABI?=armeabi-v7a
 
 # Use the git commit count as the (integer) Android version code
 ANDROID_VERSION?=$(shell git rev-list --count HEAD)
diff --git a/base b/base
index 8b1b0dbde..5957a6b80 160000
--- a/base
+++ b/base
@@ -1 +1 @@
-Subproject commit 8b1b0dbdef5fe523c11cf46593ebe10206269805
+Subproject commit 5957a6b8059a92da1b747ea1273b69da3c8e54c8
diff --git a/frontend/device/android/device.lua b/frontend/device/android/device.lua
index c7c23aee8..7b60c1b15 100644
--- a/frontend/device/android/device.lua
+++ b/frontend/device/android/device.lua
@@ -422,8 +422,8 @@ function Device:info()
     local is_eink, eink_platform = android.isEink()
     local product_type = android.getPlatformName()
 
-    local common_text = T(_("%1\n\nOS: Android %2, api %3\nBuild flavor: %4\n"),
-        android.prop.product, getCodename(), Device.firmware_rev, android.prop.flavor)
+    local common_text = T(_("%1\n\nOS: Android %2, api %3 on %4\nBuild flavor: %5\n"),
+        android.prop.product, getCodename(), Device.firmware_rev, jit.arch, android.prop.flavor)
 
     local platform_text = ""
     if product_type ~= "android" then
diff --git a/kodev b/kodev
index d9098dcbc..c18d106da 100755
--- a/kodev
+++ b/kodev
@@ -18,7 +18,12 @@ fi
 ANDROID_ARCH="${ANDROID_ARCH:-arm}"
 
 # Default to Android 4.0+; required for NDK 15 but with a custom NDK the strict minimum is 9.
-NDKABI="${NDKABI:-14}"
+if [[ "${ANDROID_ARCH}" == "arm64" ]] || [[ "${ANDROID_ARCH}" == "x86_64" ]]; then
+    # 64bit arches require at least ABI 21
+    NDKABI="${NDKABI:-21}"
+else
+    NDKABI="${NDKABI:-14}"
+fi
 export NDKABI
 
 # Default android flavor
@@ -156,7 +161,7 @@ SUPPORTED_TARGETS="
     cervantes
     remarkable
     sony-prstux
-    android
+    android         Supports ANDROID_ARCH arm, arm64, x86 & x86_64
     pocketbook
     ubuntu-touch
     appimage
@@ -799,7 +804,7 @@ TARGET:
         android)
             command -v adb >/dev/null && {
                 if [ -z "${no_build}" ]; then
-                    echo "[*] Building KOReader for Android…"
+                    echo "[*] Building KOReader for Android ${ANDROID_ARCH}…"
                     kodev-release --ignore-translation android
                     assert_ret_zero $?
                 fi
diff --git a/platform/android/luajit-launcher b/platform/android/luajit-launcher
index 2228f9309..96d7478c6 160000
--- a/platform/android/luajit-launcher
+++ b/platform/android/luajit-launcher
@@ -1 +1 @@
-Subproject commit 2228f930992cdf76b49a843eb872a43a1bf565d8
+Subproject commit 96d7478c68b072541b8040256bcdaf0230e9a593
diff --git a/spec/unit/uimanager_spec.lua b/spec/unit/uimanager_spec.lua
index ea0b6848d..d951855fd 100644
--- a/spec/unit/uimanager_spec.lua
+++ b/spec/unit/uimanager_spec.lua
@@ -127,7 +127,9 @@ describe("UIManager spec", function()
         assert.are.same("5s", UIManager._task_queue[2].action)
 
         -- insert task at the end after "10s"
-        UIManager:scheduleIn(10, 'foo') -- is a bit later than "10s", as time.now() is used internally
+        -- NOTE: Can't use 10, as time.now, which is used internally, may or may not have moved,
+        --       depending on host's performance and clock granularity (especially if host is fast and/or COARSE is available).
+        UIManager:scheduleIn(11, 'foo')
         assert.are.same('foo', UIManager._task_queue[4].action)
 
         -- insert task at the second last position after "10s"
@@ -145,14 +147,15 @@ describe("UIManager spec", function()
         UIManager:scheduleIn(5, 'barba') -- is a bit later than "5s", as time.now() is used internally
         assert.are.same('barba', UIManager._task_queue[4].action)
 
-        -- "papa" is shortly after "now"
-        UIManager:nextTick('papa') -- is a bit later than "now"
-        assert.are.same('papa', UIManager._task_queue[2].action)
-
-        -- "mama is shedule now and inserted after "now"
+        -- "mama" is sheduled now and inserted after "now"
         UIManager:schedule(now, 'mama')
         assert.are.same('mama', UIManager._task_queue[2].action)
 
+        -- "papa" is shortly after "now"
+        -- NOTE: For the same reason as above, test this last, as time.now may not have moved...
+        UIManager:nextTick('papa') -- is a bit later than "now"
+        assert.are.same('papa', UIManager._task_queue[3].action)
+
         -- "letta" is shortly after "papa"
         UIManager:tickAfterNext('letta')
         assert.are.same("function", type(UIManager._task_queue[4].action))