diff --git a/.travis.yml b/.travis.yml
index 83906e8..478199f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,7 +9,14 @@ branches:
 # install some archive programs
 before_install:
   - sudo apt-get update -qq
-  - sudo apt-get install -qq archmage arj bzip2 lbzip2 pbzip2 cabextract ncompress cpio bsdcpio lzop lcab p7zip-full p7zip-rar rar unrar zip unzip rpm2cpio binutils lha unace unace-nonfree arc nomarch unalz lrzip bsdtar rzip zoo xdms orange lzip plzip clzip pdlzip sharutils flac unadf
+  - sudo apt-get install -qq archmage arj bzip2 lbzip2 pbzip2 cabextract ncompress cpio bsdcpio lzop lcab p7zip-full zip unzip rpm2cpio binutils unace arc nomarch unalz lrzip bsdtar rzip zoo xdms orange lzip plzip clzip pdlzip sharutils flac unadf
+# apt errors:
+#E: Package 'p7zip-rar' has no installation candidate
+#E: Package 'rar' has no installation candidate
+#E: Package 'unrar' has no installation candidate
+#E: Package 'lha' has no installation candidate
+#E: Unable to locate package unace-nonfree
+
 # command to install dependencies
 install:
   - pip install -r requirements.txt --use-mirrors