diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5f1f9b9f8..8385ea229 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,7 +28,7 @@ include(EthPolicy)
 eth_policy()
 
 # project name and version should be set after cmake_policy CMP0048
-project(cpp-ethereum VERSION "1.2.3")
+project(cpp-ethereum VERSION "1.2.4")
 
 include(EthCompilerSettings)
 
diff --git a/alethzero b/alethzero
index 320d50b76..0e65260c8 160000
--- a/alethzero
+++ b/alethzero
@@ -1 +1 @@
-Subproject commit 320d50b768df80b870d733c0de282fd4ceb76418
+Subproject commit 0e65260c86c66a04dd97f80940850f63bce9e35e
diff --git a/libethereum b/libethereum
index f88f5dc21..4b55bf902 160000
--- a/libethereum
+++ b/libethereum
@@ -1 +1 @@
-Subproject commit f88f5dc2128f86614001c6e505c0d0313539c0c9
+Subproject commit 4b55bf902e2b5bc3e826e261099c2a4f52c3ef4d
diff --git a/libweb3core b/libweb3core
index 9ef32cd89..300ade534 160000
--- a/libweb3core
+++ b/libweb3core
@@ -1 +1 @@
-Subproject commit 9ef32cd892048ebfde0b1fd8def484228ba20bec
+Subproject commit 300ade534ff90acffb3e01db8b5de2789ed0227d
diff --git a/mix b/mix
index 03f1a3139..91fbfc104 160000
--- a/mix
+++ b/mix
@@ -1 +1 @@
-Subproject commit 03f1a3139586305f3f1c55b32022821cabc85f80
+Subproject commit 91fbfc1046c80669bddcaaedcaa0109fe13e6c94
diff --git a/res/mac/appdmg.json.in b/res/mac/appdmg.json.in
index 90644816f..40c813bf6 100644
--- a/res/mac/appdmg.json.in
+++ b/res/mac/appdmg.json.in
@@ -6,7 +6,6 @@
     "contents": [
         { "x": 484, "y": 480, "type": "link", "path": "/Applications" },
         { "x": 290, "y": 250,  "type": "file", "path": "${ETH_ALETHZERO_APP}" },
-        { "x": 160, "y": 250,  "type": "file", "path": "${ETH_ALETHONE_APP}" },
 		{ "x": 678, "y": 250, "type": "file", "path": "${ETH_MIX_APP}" }
     ]
 }
diff --git a/solidity b/solidity
index 33b954599..81ae2a783 160000
--- a/solidity
+++ b/solidity
@@ -1 +1 @@
-Subproject commit 33b954599589695181d995583413fa7184616cbd
+Subproject commit 81ae2a78321fddcd2d32efc51568ebeca28866a8
diff --git a/sync.sh b/sync.sh
index af6212f68..d2dae1c10 100755
--- a/sync.sh
+++ b/sync.sh
@@ -4,10 +4,14 @@ set -e
 
 git submodule sync                    
 git submodule update --init --remote .
+mkdir -p build
 cd build
+cmake ..
 make -j 4
 cd ..
-./webthree-helpers/scripts/ethtests.sh libethereum --umbrella
+# Only update if tests do not fail (disabled for now)
+#./webthree-helpers/scripts/ethtests.sh all --umbrella
+git checkout -B develop
 git commit -am 'updated submodules'   
 git push
 
diff --git a/webthree b/webthree
index 343535f48..240a3aa7a 160000
--- a/webthree
+++ b/webthree
@@ -1 +1 @@
-Subproject commit 343535f48bd665c4a3280869c512557639119792
+Subproject commit 240a3aa7af4d55f6551099583b74ac6fc557f65e
diff --git a/webthree-helpers b/webthree-helpers
index 50c2ac4e6..f37cc061d 160000
--- a/webthree-helpers
+++ b/webthree-helpers
@@ -1 +1 @@
-Subproject commit 50c2ac4e6a42d345ae5c9031691161f05ea756e2
+Subproject commit f37cc061d7004c7e69d2fc39f76651900edc3d78