diff --git a/satellites/libass.sat b/satellites/libass.sat
index f1a3333..8a0ed98 100644
--- a/satellites/libass.sat
+++ b/satellites/libass.sat
@@ -1,11 +1,11 @@
 import 'compile/configure'
 
 name=libass
-version=0.13.4
+version=0.13.6
 update_url="https://github.com/libass/$name/releases"
 
 dlextract "https://github.com/libass/$name/releases/download/$version/$name-$version.tar.xz" \
-          '414caae86700f6905215ae0267e14912'
+          'daa6cfca437c0776af5f79750cdd9b4e'
 header_end
 
 cd "$name-$version"
diff --git a/satellites/libev.sat b/satellites/libev.sat
index 662c95b..29c35d5 100644
--- a/satellites/libev.sat
+++ b/satellites/libev.sat
@@ -1,11 +1,11 @@
 import 'compile/configure'
 
 name=libev
-version=4.23
+version=4.24
 update_url="http://dist.schmorp.de/$name/"
 
 dlextract "http://dist.schmorp.de/$name/$name-$version.tar.gz" \
-          'f1dbf786ead8307e0d4f5f68f2f8526c'
+          '94459a5a22db041dec6f98424d6efe54'
 header_end
 
 cd "$name-$version"
diff --git a/satellites/youtube-dl.sat b/satellites/youtube-dl.sat
index 1b2227b..c85ab0f 100644
--- a/satellites/youtube-dl.sat
+++ b/satellites/youtube-dl.sat
@@ -1,11 +1,11 @@
 import 'compile/python'
 
 name=youtube-dl
-version=2016.12.22
+version=2017.01.02
 update_url="http://rg3.github.io/$name/download.html"
 
 dlextract "https://yt-dl.org/downloads/$version/$name-$version.tar.gz" \
-          'ab5deb1df2b749f40603ed07ffc03252'
+          '254a2732d41ac82e7e3ee75181789082'
 header_end
 
 cd "$name"