diff --git a/util/archive/upx/actions.py b/util/archive/upx/actions.py
index c542265c9b..974b5f8986 100644
--- a/util/archive/upx/actions.py
+++ b/util/archive/upx/actions.py
@@ -15,9 +15,9 @@ def setup():
     shelltools.export("UPX_LZMADIR", get.workDIR())
 
 def build():
-    autotools.make("all")
+    autotools.make("CHECK_WHITESPACE=/bin/true all")
 
 def install():
     pisitools.insinto("/usr/bin", "src/upx.out", "upx")
     pisitools.insinto("/usr/share/man/man1", "doc/upx.1")
-    pisitools.dodoc("BUGS", "COPYING", "LICENSE", "NEWS", "PROJECTS", "README*", "THANKS" )
\ No newline at end of file
+    pisitools.dodoc("BUGS", "COPYING", "LICENSE", "NEWS", "PROJECTS", "README*", "THANKS" )
diff --git a/util/archive/upx/pspec.xml b/util/archive/upx/pspec.xml
index c36b50ba8b..094599e523 100644
--- a/util/archive/upx/pspec.xml
+++ b/util/archive/upx/pspec.xml
@@ -12,7 +12,7 @@
         <IsA>app:console</IsA>
         <Summary>Ultimate executable compressor.</Summary>
         <Description>UPX is an advanced executable file compressor. UPX will typically reduce the file size of programs and DLLs by around 50%-70%, thus reducing disk space, network load times, download times and other distribution and storage costs.</Description>
-        <Archive sha1sum="da962c0affb27eae11aa9b6fbd751c3699717b36" type="tarbz2">http://upx.sourceforge.net/download/upx-3.91-src.tar.bz2</Archive>
+        <Archive sha1sum="d692b9b699992a8b6e29576734384dedca4e029b" type="tarxz">http://upx.sourceforge.net/download/upx-3.94-src.tar.xz</Archive>
         <Archive sha1sum="5ec1c4606fec88c770a9712073e83916f8aed173" type="tarbz2">http://downloads.sourceforge.net/sevenzip/lzma465.tar.bz2</Archive>
         <BuildDependencies>
             <Dependency>ucl-devel</Dependency>
@@ -35,6 +35,13 @@
     </Package>
 
     <History>
+        <Update release="4">
+            <Date>2018-01-14</Date>
+            <Version>3.94</Version>
+            <Comment>Version bump.</Comment>
+            <Name>Mustafa Cinasal</Name>
+            <Email>muscnsl@gmail.com</Email>
+        </Update>
         <Update release="3">
             <Date>2017-02-17</Date>
             <Version>3.91</Version>
@@ -57,4 +64,4 @@
             <Email>karaguzelibrahim@gmail.com</Email>
         </Update>
     </History>
-</PISI>
\ No newline at end of file
+</PISI>