diff --git a/crossbar/crossbar.patch b/crossbar/crossbar.patch
index d330f7d454..e045f03df7 100644
--- a/crossbar/crossbar.patch
+++ b/crossbar/crossbar.patch
@@ -1,18 +1,18 @@
 Index: requirements-min.txt
---- requirements-min.txt.orig	2017-09-05 12:24:13.000000000 +0200
-+++ requirements-min.txt	2017-09-05 23:29:27.255749000 +0200
-@@ -15,7 +15,6 @@
+--- requirements-min.txt.orig	2018-05-11 20:06:00.245170000 +0200
++++ requirements-min.txt	2018-05-11 20:06:44.252446000 +0200
+@@ -14,7 +14,6 @@
+ mistune>=0.7.4
  Pygments>=2.2.0
  PyYAML>=3.12
- shutilwhich>=1.1.0
 -sdnotify>=0.3.1
  psutil>=5.2.2
  lmdb>=0.92
  u-msgpack-python>=2.4.1
 Index: requirements.txt
---- requirements.txt.orig	2017-09-05 23:29:27.256067000 +0200
-+++ requirements.txt	2017-09-05 23:30:23.684132000 +0200
-@@ -278,8 +278,6 @@
+--- requirements.txt.orig	2018-05-11 16:11:24.000000000 +0200
++++ requirements.txt	2018-05-11 20:06:00.245374000 +0200
+@@ -207,8 +207,6 @@
  requests==2.18.4 \
      --hash=sha256:6a1b267aa90cac58ac3a765d067950e7dbbf75b1da07e895d1f594193a40a38b \
      --hash=sha256:9c443e7324ba5b85070c4a818ade28bfabedf16ea10206da1132edaa6dda237e
diff --git a/crossbar/crossbar.spec b/crossbar/crossbar.spec
index e4ff5765ce..75562b371f 100644
--- a/crossbar/crossbar.spec
+++ b/crossbar/crossbar.spec
@@ -22,8 +22,8 @@
 ##
 
 #   package version
-%define       V_opkg 18.4.1
-%define       V_dist 18.4.1
+%define       V_opkg 18.5.1
+%define       V_dist 18.5.1
 
 #   package information
 Name:         crossbar
@@ -36,7 +36,7 @@ Class:        EVAL
 Group:        Networking
 License:      AGPL
 Version:      %{V_opkg}
-Release:      20180410
+Release:      20180511
 
 #   list of sources
 Source0:      https://github.com/crossbario/crossbar/archive/v%{V_dist}.tar.gz