diff --git a/icontrol/rebar.config b/icontrol/rebar.config
index 29abaa3..4232bdc 100644
--- a/icontrol/rebar.config
+++ b/icontrol/rebar.config
@@ -1,4 +1,4 @@
-{require_otp_vsn, "R1[456]B|17"}.
+{require_otp_vsn, "18"}.
 
 {erl_opts,
  [fail_on_warning,
diff --git a/net_observer/rebar.config b/net_observer/rebar.config
index 7be9ea2..d9a3a65 100644
--- a/net_observer/rebar.config
+++ b/net_observer/rebar.config
@@ -1,4 +1,4 @@
-{require_otp_vsn, "R1[456]B|17"}.
+{require_otp_vsn, "18"}.
 
 {erl_opts,
  [fail_on_warning,
diff --git a/simple_ne/rebar.config b/simple_ne/rebar.config
index d828171..de844ff 100644
--- a/simple_ne/rebar.config
+++ b/simple_ne/rebar.config
@@ -1,4 +1,4 @@
-{require_otp_vsn, "R1[456]B|17"}.
+{require_otp_vsn, "18"}.
 
 {erl_opts,
  [fail_on_warning,
diff --git a/stats_poller/rebar.config b/stats_poller/rebar.config
index d157ae1..4b54cb4 100644
--- a/stats_poller/rebar.config
+++ b/stats_poller/rebar.config
@@ -1,4 +1,4 @@
-{require_otp_vsn, "R1[456]B|17"}.
+{require_otp_vsn, "18"}.
 
 {erl_opts,
  [fail_on_warning,
diff --git a/tap_install/rebar.config b/tap_install/rebar.config
index 1270870..18bca9c 100644
--- a/tap_install/rebar.config
+++ b/tap_install/rebar.config
@@ -1,4 +1,4 @@
-{require_otp_vsn, "R1[56]B|17"}.
+{require_otp_vsn, "18"}.
 
 {erl_opts,
  [fail_on_warning,
diff --git a/tapestry/rebar.config b/tapestry/rebar.config
index 0b82ecf..5c1cc3d 100644
--- a/tapestry/rebar.config
+++ b/tapestry/rebar.config
@@ -1,4 +1,4 @@
-{require_otp_vsn, "R1[56]B|17"}.
+{require_otp_vsn, "18"}.
 
 {erl_opts,
  [fail_on_warning,
@@ -11,13 +11,14 @@
  {folsom,     ".*",{git, "https://github.com/boundary/folsom.git", {branch,"master"}}}, 
  {jiffy, ".*", {git, "https://github.com/davisp/jiffy.git", {branch, "master"}}},
  {pkt, ".*", {git, "https://github.com/esl/pkt.git", "d534784420b3ff41b7c36a6dd7a114497c8767ea"}},
- {yaws, ".*", {git, "https://github.com/klacke/yaws.git", {tag, "yaws-1.98"}}},
+ {yaws, ".*", {git, "https://github.com/klacke/yaws.git", {tag, "yaws-erlang-18"}}},
  {bifrost, ".*", {git, "https://github.com/marcsugiyama/bifrost.git", {branch, "debug"}}},
  {of_msg_lib, ".*",{git, "https://github.com/FlowForwarding/of_msg_lib.git", {branch,"master"}}},
  {of_protocol, ".*",{git, "https://github.com/FlowForwarding/of_protocol.git", {branch,"master"}}},
  {ofs_handler, ".*",{git, "https://github.com/FlowForwarding/ofs_handler.git",{branch,"master"}}},
  {of_driver, ".*",{git, "https://github.com/FlowForwarding/of_driver.git", {branch,"master"}}},
- {recon, ".*",{git, "https://github.com/ferd/recon.git", {branch,"master"}}}
+ {recon, ".*",{git, "https://github.com/ferd/recon.git", {branch,"master"}}},
+ {ibrowse, ".*", {git, "https://github.com/cmullaparthi/ibrowse", {branch, "master"}}}
 ]}.
 
 {sub_dirs,