diff --git a/abi_symbols b/abi_symbols
--- a/abi_symbols
+++ b/abi_symbols
@@ -20,7 +20,7 @@
 libArcus.so.3:_ZN5Arcus6Socket11sendMessageESt10shared_ptrIN6google8protobuf7MessageEE
 libArcus.so.3:_ZN5Arcus6Socket13createMessageERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE
 libArcus.so.3:_ZN5Arcus6Socket14removeListenerEPNS_14SocketListenerE
-libArcus.so.3:_ZN5Arcus6Socket15takeNextMessageEb
+libArcus.so.3:_ZN5Arcus6Socket15takeNextMessageEv
 libArcus.so.3:_ZN5Arcus6Socket19registerMessageTypeEPKN6google8protobuf7MessageE
 libArcus.so.3:_ZN5Arcus6Socket23registerAllMessageTypesERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE
 libArcus.so.3:_ZN5Arcus6Socket5closeEv
diff --git a/package.yml b/package.yml
--- a/package.yml
+++ b/package.yml
@@ -1,8 +1,8 @@
 name       : libarcus
-version    : 3.6.0
-release    : 12
+version    : 4.0.0
+release    : 13
 source     :
-    - https://github.com/Ultimaker/libArcus/archive/3.6.0.tar.gz : d9dee21a558e3a13b23f5ee5f264e08ec8f231a0b6a6354f6eabb081a9e5da9f
+    - https://github.com/Ultimaker/libArcus/archive/4.0.0.tar.gz : fc7709fe8e9738d219baa65606a092dc67d5c9fc3002d48f074a7c55db87a8e4
 license    : LGPL-3.0-or-later
 component  : programming.library
 summary    : Communication library between internal components for Ultimaker software
diff --git a/pspec_x86_64.xml b/pspec_x86_64.xml
--- a/pspec_x86_64.xml
+++ b/pspec_x86_64.xml
@@ -2,8 +2,8 @@
     <Source>
         <Name>libarcus</Name>
         <Packager>
-            <Name>F. von Gellhorn</Name>
-            <Email>flinux@vongellhorn.ch</Email>
+            <Name>Pierre-Yves</Name>
+            <Email>pyu@riseup.net</Email>
         </Packager>
         <License>LGPL-3.0-or-later</License>
         <PartOf>programming.library</PartOf>
@@ -13,7 +13,7 @@
 based on the Protocol Buffers library. It is designed to facilitate the
 communication between Cura and its backend and similar code.
 </Description>
-        <Archive type="binary" sha1sum="79eb0752a961b8e0d15c77d298c97498fbc89c5a">https://solus-project.com/sources/README.Solus</Archive>
+        <Archive type="binary" sha1sum="79eb0752a961b8e0d15c77d298c97498fbc89c5a">https://getsol.us/sources/README.Solus</Archive>
     </Source>
     <Package>
         <Name>libarcus</Name>
@@ -40,7 +40,7 @@
 </Description>
         <PartOf>programming.devel</PartOf>
         <RuntimeDependencies>
-            <Dependency release="12">libarcus</Dependency>
+            <Dependency release="13">libarcus</Dependency>
         </RuntimeDependencies>
         <Files>
             <Path fileType="header">/usr/include/Arcus/ArcusExport.h</Path>
@@ -57,12 +57,12 @@
         </Files>
     </Package>
     <History>
-        <Update release="12">
-            <Date>2019-01-07</Date>
-            <Version>3.6.0</Version>
+        <Update release="13">
+            <Date>2019-04-22</Date>
+            <Version>4.0.0</Version>
             <Comment>Packaging update</Comment>
-            <Name>F. von Gellhorn</Name>
-            <Email>flinux@vongellhorn.ch</Email>
+            <Name>Pierre-Yves</Name>
+            <Email>pyu@riseup.net</Email>
         </Update>
     </History>
 </PISI>
\ No newline at end of file