diff --git a/curve25519-parser/Cargo.toml b/curve25519-parser/Cargo.toml
index 4dcb65d..a34dc24 100644
--- a/curve25519-parser/Cargo.toml
+++ b/curve25519-parser/Cargo.toml
@@ -12,7 +12,7 @@ readme = "../README.md"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-der-parser = { version = "6", default-features = false}
+der-parser = { version = "8", default-features = false}
 x25519-dalek = { version = "1", default-features = false}
 curve25519-dalek = { version = "3", default-features = false, features = ["u64_backend"]}
 sha2 = { version = "0", default-features = false}
diff --git a/curve25519-parser/src/lib.rs b/curve25519-parser/src/lib.rs
index 078bf5b..391baed 100644
--- a/curve25519-parser/src/lib.rs
+++ b/curve25519-parser/src/lib.rs
@@ -97,7 +97,7 @@ struct Der25519PrivateStruct<'a> {
 
 fn parse_25519_private_header(i: &[u8]) -> IResult<&[u8], Der25519PrivateHeader, BerError> {
     parse_der_container(|i: &[u8], hdr| {
-        if hdr.tag != DerTag::Sequence {
+        if hdr.tag() != Tag::Sequence {
             return Err(nom::Err::Error(BerError::InvalidTag));
         }
         let (i, tag) = parse_der_oid(i)?;
@@ -108,7 +108,7 @@ fn parse_25519_private_header(i: &[u8]) -> IResult<&[u8], Der25519PrivateHeader,
 
 fn parse_25519_private(i: &[u8]) -> IResult<&[u8], Der25519PrivateStruct, BerError> {
     parse_der_container(|i: &[u8], hdr| {
-        if hdr.tag != DerTag::Sequence {
+        if hdr.tag() != Tag::Sequence {
             return Err(nom::Err::Error(BerError::InvalidTag));
         }
         let (i, _unk) = parse_der_integer(i)?;
@@ -180,7 +180,7 @@ struct DerEd25519PublicStruct<'a> {
 
 fn parse_25519_public_header(i: &[u8]) -> IResult<&[u8], DerEd25519PublicHeader, BerError> {
     parse_der_container(|i: &[u8], hdr| {
-        if hdr.tag != DerTag::Sequence {
+        if hdr.tag() != Tag::Sequence {
             return Err(nom::Err::Error(BerError::InvalidTag));
         }
         let (i, tag) = parse_der_oid(i)?;
@@ -191,7 +191,7 @@ fn parse_25519_public_header(i: &[u8]) -> IResult<&[u8], DerEd25519PublicHeader,
 
 fn parse_25519_public(i: &[u8]) -> IResult<&[u8], DerEd25519PublicStruct, BerError> {
     parse_der_container(|i: &[u8], hdr| {
-        if hdr.tag != DerTag::Sequence {
+        if hdr.tag() != Tag::Sequence {
             return Err(nom::Err::Error(BerError::InvalidTag));
         }
         let (i, header) = complete(parse_25519_public_header)(i)?;