diff --git a/libc/tools/zoneinfo/generate b/libc/tools/zoneinfo/generate
index e48a3c9ea..3e21d0b9f 100755
--- a/libc/tools/zoneinfo/generate
+++ b/libc/tools/zoneinfo/generate
@@ -37,6 +37,9 @@ if [ "$current_version" == "$latest_version" ]; then
   exit 1
 fi
 
+md5_sum=`md5sum $latest_archive`
+echo "MD5: $md5_sum"
+
 echo "Extracting $latest_version..."
 mkdir $latest_version
 tar -C $latest_version -zxf $latest_archive
diff --git a/libc/zoneinfo/zoneinfo.dat b/libc/zoneinfo/zoneinfo.dat
index e41422e50..1d945ff45 100644
Binary files a/libc/zoneinfo/zoneinfo.dat and b/libc/zoneinfo/zoneinfo.dat differ
diff --git a/libc/zoneinfo/zoneinfo.idx b/libc/zoneinfo/zoneinfo.idx
index eb02e80ad..85505cc93 100644
Binary files a/libc/zoneinfo/zoneinfo.idx and b/libc/zoneinfo/zoneinfo.idx differ
diff --git a/libc/zoneinfo/zoneinfo.version b/libc/zoneinfo/zoneinfo.version
index 6140b761a..c7a1929c9 100644
--- a/libc/zoneinfo/zoneinfo.version
+++ b/libc/zoneinfo/zoneinfo.version
@@ -1 +1 @@
-2011l
+2011m