diff --git a/src/byte_array.rs b/src/byte_array.rs
index 74d5a9e..6ea6485 100644
--- a/src/byte_array.rs
+++ b/src/byte_array.rs
@@ -61,7 +61,7 @@ mod tests {
     use generic_array::typenum::*;
 
     static BYTES: &[u8] = &[1, 2, 3, 4, 5, 6, 7];
-    static BASE64_JSON: &str = "\"AQIDBAUGBw==\"";
+    static BASE64_JSON: &str = "\"AQIDBAUGBw\"";
 
     fn get_de() -> serde_json::Deserializer<serde_json::de::StrRead<'static>> {
         serde_json::Deserializer::from_str(&BASE64_JSON)
diff --git a/src/byte_vec.rs b/src/byte_vec.rs
index 2451881..b7b85e4 100644
--- a/src/byte_vec.rs
+++ b/src/byte_vec.rs
@@ -24,7 +24,7 @@ mod tests {
     use super::*;
 
     static BYTES: &[u8] = &[1, 2, 3, 4, 5, 6, 7];
-    static BASE64_JSON: &str = "\"AQIDBAUGBw==\"";
+    static BASE64_JSON: &str = "\"AQIDBAUGBw\"";
 
     #[test]
     fn test_serde_byte_vec() {
diff --git a/src/tests.rs b/src/tests.rs
index 232a5ad..bdf74db 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -87,7 +87,7 @@ fn serialize_es256() {
     };
     assert_eq!(
         jwk.to_string(),
-        r#"{"kty":"EC","crv":"P-256","x":"AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQE=","y":"AgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgI="}"#
+        r#"{"kty":"EC","crv":"P-256","x":"AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQE","y":"AgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgI"}"#
     );
 }
 
@@ -156,7 +156,7 @@ fn serialize_hs256() {
     };
     assert_eq!(
         jwk.to_string(),
-        r#"{"kty":"oct","k":"KioqKioqKioqKioqKioqKg=="}"#
+        r#"{"kty":"oct","k":"KioqKioqKioqKioqKioqKg"}"#
     );
 }
 
diff --git a/src/utils.rs b/src/utils.rs
index 2a75c17..426e1ea 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -5,7 +5,7 @@ use serde::{
 use zeroize::Zeroizing;
 
 fn base64_config() -> base64::Config {
-    base64::Config::new(base64::CharacterSet::UrlSafe, true /* pad */)
+    base64::Config::new(base64::CharacterSet::UrlSafe, false /* pad */)
 }
 
 fn base64_encode(bytes: impl AsRef<[u8]>) -> String {