diff --git a/benches/Cargo.toml b/benches/Cargo.toml
index 10e6b35..5dcad24 100644
--- a/benches/Cargo.toml
+++ b/benches/Cargo.toml
@@ -96,16 +96,16 @@ uuid = "1.2.2"
 const-str = "0.5.3"
 faster-hex = "0.6.1"
 radix64 = { version = "0.6.2", default-features = false }
-base64 = "0.13.1"
+base64 = "0.20.0"
 hex = "0.4.3"
 base16 = "0.2.1"
 getrandom = { version = "0.2", features = ["js"] }
 base64ct = "1.5.3"
 base16ct = "0.1.1"
 base32ct = "0.1.0"
-data-encoding = "2.3.2"
+data-encoding = "2.3.3"
 encoding_rs = "0.8.31"
-rayon = { version = "1.6.0", optional = true }
+rayon = { version = "1.6.1", optional = true }
 
 [dev-dependencies]
 criterion = { version = "0.4.0", default-features = false, features = ["rayon"] }
diff --git a/benches/base64.rs b/benches/base64.rs
index f9f34a4..3d15762 100644
--- a/benches/base64.rs
+++ b/benches/base64.rs
@@ -29,8 +29,8 @@ pub fn bench_encode(c: &mut Criterion) {
             radix64::STD.encode_slice(src, dst);
         }),
         ("base64/fallback", |src, dst| {
-            let config = base64::STANDARD;
-            base64::encode_config_slice(src, config, dst);
+            let config = base64::engine::DEFAULT_ENGINE;
+            base64::encode_engine_slice(src, dst, &config);
         }),
         ("base64ct/fallback", |src, dst| {
             use base64ct::Encoding;
@@ -71,8 +71,8 @@ pub fn bench_decode(c: &mut Criterion) {
             radix64::STD.decode_slice(src, dst).unwrap();
         }),
         ("base64/fallback", |src, dst| {
-            let config = base64::STANDARD;
-            base64::decode_config_slice(src, config, dst).unwrap();
+            let config = base64::engine::DEFAULT_ENGINE;
+            base64::decode_engine_slice(src, dst, &config).unwrap();
         }),
         ("base64ct/fallback", |src, dst| {
             use base64ct::Encoding;
diff --git a/crates/base64-simd/Cargo.toml b/crates/base64-simd/Cargo.toml
index a46ef3c..c34b25e 100644
--- a/crates/base64-simd/Cargo.toml
+++ b/crates/base64-simd/Cargo.toml
@@ -26,7 +26,7 @@ outref = "0.4.0"
 vsimd = { path = "../vsimd", version = "0.8.0-dev" }
 
 [dev-dependencies]
-base64 = "0.13.1"
+base64 = "0.20.0"
 rand = "0.8.5"
 const-str = "0.5.3"
 
diff --git a/crates/base64-simd/tests/it.rs b/crates/base64-simd/tests/it.rs
index 795f265..3b38fc0 100644
--- a/crates/base64-simd/tests/it.rs
+++ b/crates/base64-simd/tests/it.rs
@@ -81,17 +81,25 @@ fn random() {
             STANDARD_NO_PAD, //
             URL_SAFE_NO_PAD, //
         ];
-        let base_config = [
-            base64::STANDARD,
-            base64::URL_SAFE,
-            base64::STANDARD_NO_PAD,
-            base64::URL_SAFE_NO_PAD,
-        ];
+
+        let base_config = {
+            use base64::alphabet::*;
+            use base64::engine::fast_portable::{FastPortable, NO_PAD, PAD};
+
+            let f = FastPortable::from;
+
+            [
+                f(&STANDARD, PAD),
+                f(&URL_SAFE, PAD),
+                f(&STANDARD, NO_PAD),
+                f(&URL_SAFE, NO_PAD),
+            ]
+        };
 
         for (base64, config) in test_config.into_iter().zip(base_config.into_iter()) {
             dbgmsg!("base64 = {:?}", base64);
 
-            let encoded = base64::encode_config(&bytes, config);
+            let encoded = base64::encode_engine(&bytes, &config);
             let encoded = encoded.as_bytes();
             assert!(base64.check(encoded).is_ok());