diff --git a/doc/docs/tutorial.md b/doc/docs/tutorial.md
index b0278fa..95c08aa 100644
--- a/doc/docs/tutorial.md
+++ b/doc/docs/tutorial.md
@@ -20,7 +20,7 @@ Finally, `seqkit bam` is used to display detailed alignment statistics from the
 
     # Define reference and data URL:
     REF_URL="https://www.ncbi.nlm.nih.gov/sviewer/viewer.cgi?tool=portal&save=file&log$=seqview&db=nuccore&report=fasta&id=1798174254&extrafeat=null&conwithfeat=on&hide-cdd=on&ncbi_phid=CE8B108356DDCF110000000005B10489"
-    DATA_URL="ftp://ftp.sra.ebi.ac.uk/vol1/fastq/SRR145/055/SRR14560555/SRR14560555_1.fastq.gz"
+    DATA_URL="http://ftp.sra.ebi.ac.uk/vol1/fastq/SRR145/055/SRR14560555/SRR14560555_1.fastq.gz"
 
     # Map SARS-CoV-2 amplicon reads to reference followed by these steps:
     # - keep only primary reads with mapping quality greater than 1.
diff --git a/go.mod b/go.mod
index 92c8b13..160cadf 100644
--- a/go.mod
+++ b/go.mod
@@ -13,7 +13,7 @@ require (
 	github.com/elliotwutingfeng/asciiset v0.0.0-20230602022725-51bbb787efab
 	github.com/fsnotify/fsnotify v1.5.4
 	github.com/iafan/cwalk v0.0.0-20210125030640-586a8832a711
-	github.com/klauspost/compress v1.17.3
+	github.com/klauspost/compress v1.17.5
 	github.com/klauspost/pgzip v1.2.6
 	github.com/logrusorgru/aurora v2.0.3+incompatible
 	github.com/mattn/go-colorable v0.1.13
@@ -25,7 +25,7 @@ require (
 	github.com/shenwei356/bwt v0.6.1
 	github.com/shenwei356/go-logging v0.0.0-20171012171522-c6b9702d88ba
 	github.com/shenwei356/stable v0.1.2
-	github.com/shenwei356/util v0.5.1
+	github.com/shenwei356/util v0.5.2
 	github.com/shenwei356/xopen v0.3.2
 	github.com/smallfish/simpleyaml v0.1.0
 	github.com/spf13/cobra v1.8.0
diff --git a/go.sum b/go.sum
index 9e2a2f1..6cd5660 100644
--- a/go.sum
+++ b/go.sum
@@ -82,8 +82,8 @@ github.com/jung-kurt/gofpdf v1.0.3-0.20190309125859-24315acbbda5/go.mod h1:7Id9E
 github.com/jung-kurt/gofpdf v1.16.2/go.mod h1:1hl7y57EsiPAkLbOwzpzqgx1A30nQCk/YmFV8S2vmK0=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/klauspost/compress v1.4.1/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
-github.com/klauspost/compress v1.17.3 h1:qkRjuerhUU1EmXLYGkSH6EZL+vPSxIrYjLNAK4slzwA=
-github.com/klauspost/compress v1.17.3/go.mod h1:/dCuZOvVtNoHsyb+cuJD3itjs3NbnF6KH9zAO4BDxPM=
+github.com/klauspost/compress v1.17.5 h1:d4vBd+7CHydUqpFBgUEKkSdtSugf9YFmSkvUYPquI5E=
+github.com/klauspost/compress v1.17.5/go.mod h1:/dCuZOvVtNoHsyb+cuJD3itjs3NbnF6KH9zAO4BDxPM=
 github.com/klauspost/cpuid v1.2.0/go.mod h1:Pj4uuM528wm8OyEC2QMXAi2YiTZ96dNQPGgoMS4s3ek=
 github.com/klauspost/pgzip v1.2.6 h1:8RXeL5crjEUFnR2/Sn6GJNWtSQ3Dk8pq4CL3jvdDyjU=
 github.com/klauspost/pgzip v1.2.6/go.mod h1:Ch1tH69qFZu15pkjo5kYi6mth2Zzwzt50oCQKQE9RUs=
@@ -135,8 +135,8 @@ github.com/shenwei356/natsort v0.0.0-20220117010048-580176ad49fb h1:pb0RhpaADsFr
 github.com/shenwei356/natsort v0.0.0-20220117010048-580176ad49fb/go.mod h1:SiiGiRFyRtV7S9RamOrmQR5gpGIRhWJM1w0EtmuQ1io=
 github.com/shenwei356/stable v0.1.2 h1:TCpfL8bFvZxbZcCm6XaSXpKYv4UopnRejIx6f+StiuM=
 github.com/shenwei356/stable v0.1.2/go.mod h1:KghgqlviHPiKn9AuSTpadb7ep74n42VsNtPLoZZ/JIc=
-github.com/shenwei356/util v0.5.1 h1:m3SjmJvIkEr7hQ1LyGGy5cgfQFSFOww2wmpZ0/hIiIM=
-github.com/shenwei356/util v0.5.1/go.mod h1:3tRAOfreWdgl/Zh1gE008h2lWocf5/YAxVSjgLKvd4k=
+github.com/shenwei356/util v0.5.2 h1:kU9bnkE3RRUAlya+hbfwy83iTMOJqIHOlYgejYPb7mU=
+github.com/shenwei356/util v0.5.2/go.mod h1:3tRAOfreWdgl/Zh1gE008h2lWocf5/YAxVSjgLKvd4k=
 github.com/shenwei356/xopen v0.3.2 h1:gD/0EvcMa6m2Y1XSdALs9WdhIgiZmn5wVZTjKldCCQo=
 github.com/shenwei356/xopen v0.3.2/go.mod h1:6EQUa6I7Zsl2GQKqcL9qGLrTzVE+oZyly+uhzovQYSk=
 github.com/smallfish/simpleyaml v0.1.0 h1:5uAZdLAiHxS9cmzkOxg7lH0dILXKTD7uRZbAhyHmyU0=