diff --git a/Cargo.lock b/Cargo.lock
index b5e9c68..62becbb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -232,12 +232,6 @@ dependencies = [
  "backtrace",
 ]
 
-[[package]]
-name = "base16ct"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c7f02d4ea65f2c1853089ffd8d2787bdbc63de2f0d29dedbcf8ccdfa0ccd4cf"
-
 [[package]]
 name = "base64"
 version = "0.21.7"
@@ -250,6 +244,12 @@ version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
 
+[[package]]
+name = "base64ct"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c3c1a368f70d6cf7302d78f8f7093da241fb8e8807c05cc9e51a125895a6d5b"
+
 [[package]]
 name = "bitflags"
 version = "2.6.0"
@@ -1657,7 +1657,7 @@ name = "streamstore-cli"
 version = "0.7.0"
 dependencies = [
  "async-stream",
- "base16ct",
+ "base64ct",
  "clap",
  "color-print",
  "colored",
diff --git a/Cargo.toml b/Cargo.toml
index f877881..309d762 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,7 +14,7 @@ path = "src/main.rs"
 
 [dependencies]
 async-stream = "0.3.6"
-base16ct = { version = "0.2.0", features = ["alloc"] }
+base64ct = { version = "1.6.0", features = ["alloc"] }
 clap = { version = "4.5.20", features = ["derive"] }
 color-print = "0.3.6"
 colored = "2.1.0"
diff --git a/src/main.rs b/src/main.rs
index 29eb1df..982c9c8 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -6,6 +6,7 @@ use std::{
 };
 
 use account::AccountService;
+use base64ct::{Base64, Encoding};
 use basin::BasinService;
 use clap::{builder::styling, Parser, Subcommand};
 use colored::*;
@@ -213,7 +214,7 @@ enum Commands {
         /// and any regression will be ignored.
         trim_point: u64,
 
-        /// Enforce fencing token specified in hex.
+        /// Enforce fencing token specified in base64.
         #[arg(short = 'f', long, value_parser = parse_fencing_token)]
         fencing_token: Option<FencingToken>,
 
@@ -233,12 +234,12 @@ enum Commands {
         #[arg(value_name = "S2_URI")]
         uri: S2BasinAndStreamUri,
 
-        /// New fencing token specified in hex.
+        /// New fencing token specified in base64.
         /// It may be upto 16 bytes, and can be empty.
         #[arg(value_parser = parse_fencing_token)]
         new_fencing_token: FencingToken,
 
-        /// Enforce existing fencing token, specified in hex.
+        /// Enforce existing fencing token, specified in base64.
         #[arg(short = 'f', long, value_parser = parse_fencing_token)]
         fencing_token: Option<FencingToken>,
 
@@ -254,7 +255,7 @@ enum Commands {
         #[arg(value_name = "S2_URI")]
         uri: S2BasinAndStreamUri,
 
-        /// Enforce fencing token specified in hex.
+        /// Enforce fencing token specified in base64.
         #[arg(short = 'f', long, value_parser = parse_fencing_token)]
         fencing_token: Option<FencingToken>,
 
@@ -410,8 +411,8 @@ fn parse_records_output_source(s: &str) -> Result<RecordsOut, std::io::Error> {
 }
 
 fn parse_fencing_token(s: &str) -> Result<FencingToken, ConvertError> {
-    base16ct::mixed::decode_vec(s)
-        .map_err(|_| "invalid hex")?
+    Base64::decode_vec(s)
+        .map_err(|_| "invalid base64")?
         .try_into()
 }
 
@@ -860,7 +861,10 @@ async fn run() -> Result<(), S2CliError> {
                                                 let (cmd, description) = match command_record {
                                                     CommandRecord::Fence { fencing_token } => (
                                                         "fence",
-                                                        format!("FencingToken({})", base16ct::lower::encode_string(fencing_token.as_ref())),
+                                                        format!(
+                                                            "FencingToken({})",
+                                                            Base64::encode_string(fencing_token.as_ref()),
+                                                        ),
                                                     ),
                                                     CommandRecord::Trim { seq_num } => (
                                                         "trim",