diff --git a/Cargo.lock b/Cargo.lock
index f0823962..f3ff2c34 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -824,7 +824,7 @@ dependencies = [
 
 [[package]]
 name = "pilota-thrift-parser"
-version = "0.11.0"
+version = "0.11.1"
 dependencies = [
  "nom",
 ]
diff --git a/pilota-thrift-parser/Cargo.toml b/pilota-thrift-parser/Cargo.toml
index 9bbde99a..6a682ab8 100644
--- a/pilota-thrift-parser/Cargo.toml
+++ b/pilota-thrift-parser/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pilota-thrift-parser"
-version = "0.11.0"
+version = "0.11.1"
 edition = "2021"
 description = "Pilota thrift Parser."
 documentation = "https://docs.rs/pilota"
diff --git a/pilota-thrift-parser/src/parser/mod.rs b/pilota-thrift-parser/src/parser/mod.rs
index c5a0abb7..da1e5578 100644
--- a/pilota-thrift-parser/src/parser/mod.rs
+++ b/pilota-thrift-parser/src/parser/mod.rs
@@ -22,7 +22,7 @@ use std::sync::Arc;
 use nom::{
     branch::alt,
     bytes::complete::{tag, take_till, take_until},
-    character::complete::{multispace1, one_of},
+    character::complete::{multispace1, one_of, satisfy},
     combinator::{map, opt},
     multi::{many0, many1, separated_list1},
     sequence::{preceded, terminated, tuple},
@@ -63,3 +63,7 @@ fn comment(input: &str) -> IResult<&str, &str> {
 pub(crate) fn blank(input: &str) -> IResult<&str, ()> {
     map(many1(alt((comment, multispace1))), |_| ())(input)
 }
+
+pub(crate) fn alphanumeric_or_underscore(input: &str) -> IResult<&str, char> {
+    satisfy(|c: char| c.is_alphanumeric() || c == '_')(input)
+}
diff --git a/pilota-thrift-parser/src/parser/namespace.rs b/pilota-thrift-parser/src/parser/namespace.rs
index e9681361..9540ca16 100644
--- a/pilota-thrift-parser/src/parser/namespace.rs
+++ b/pilota-thrift-parser/src/parser/namespace.rs
@@ -46,8 +46,8 @@ impl Parser for Scope {
                 tag("netstd"),
                 tag("perl"),
                 tag("php"),
-                tag("py"),
                 tag("py.twisted"),
+                tag("py"),
                 tag("rb"),
                 tag("st"),
                 tag("xsd"),
diff --git a/pilota-thrift-parser/src/parser/struct_.rs b/pilota-thrift-parser/src/parser/struct_.rs
index c1921858..ca13ec21 100644
--- a/pilota-thrift-parser/src/parser/struct_.rs
+++ b/pilota-thrift-parser/src/parser/struct_.rs
@@ -98,4 +98,13 @@ mod tests {
         }"#;
         Struct::parse(str).unwrap();
     }
+
+    #[test]
+    fn test_ty() {
+        let str = r#"struct Test {
+            1: required string(pilota.annotation="test") Service,      // required service
+            2: required bytet_i.Injection Injection,
+        }"#;
+        Struct::parse(str).unwrap();
+    }
 }
diff --git a/pilota-thrift-parser/src/parser/ty.rs b/pilota-thrift-parser/src/parser/ty.rs
index 318eb4f0..b2f1d7bd 100644
--- a/pilota-thrift-parser/src/parser/ty.rs
+++ b/pilota-thrift-parser/src/parser/ty.rs
@@ -1,9 +1,10 @@
 use std::sync::Arc;
 
 use nom::{
+    self,
     branch::{alt, permutation},
     bytes::complete::tag,
-    combinator::{map, opt},
+    combinator::{map, not, opt, peek},
     sequence::{preceded, tuple},
     IResult,
 };
@@ -40,17 +41,50 @@ impl Parser for CppType {
 impl Parser for Ty {
     fn parse(input: &str) -> IResult<&str, Ty> {
         alt((
-            map(tag("string"), |_| Ty::String),
-            map(tag("void"), |_| Ty::Void),
-            map(tag("byte"), |_| Ty::Byte),
-            map(tag("bool"), |_| Ty::Bool),
-            map(tag("binary"), |_| Ty::Binary),
-            map(tag("i8"), |_| Ty::I8),
-            map(tag("i16"), |_| Ty::I16),
-            map(tag("i32"), |_| Ty::I32),
-            map(tag("i64"), |_| Ty::I64),
-            map(tag("double"), |_| Ty::Double),
-            map(tag("uuid"), |_| Ty::Uuid),
+            map(
+                tuple((tag("string"), peek(not(alphanumeric_or_underscore)))),
+                |_| Ty::String,
+            ),
+            map(
+                tuple((tag("void"), peek(not(alphanumeric_or_underscore)))),
+                |_| Ty::Void,
+            ),
+            map(
+                tuple((tag("byte"), peek(not(alphanumeric_or_underscore)))),
+                |_| Ty::Byte,
+            ),
+            map(
+                tuple((tag("bool"), peek(not(alphanumeric_or_underscore)))),
+                |_| Ty::Bool,
+            ),
+            map(
+                tuple((tag("binary"), peek(not(alphanumeric_or_underscore)))),
+                |_| Ty::Binary,
+            ),
+            map(
+                tuple((tag("i8"), peek(not(alphanumeric_or_underscore)))),
+                |_| Ty::I8,
+            ),
+            map(
+                tuple((tag("i16"), peek(not(alphanumeric_or_underscore)))),
+                |_| Ty::I16,
+            ),
+            map(
+                tuple((tag("i32"), peek(not(alphanumeric_or_underscore)))),
+                |_| Ty::I32,
+            ),
+            map(
+                tuple((tag("i64"), peek(not(alphanumeric_or_underscore)))),
+                |_| Ty::I64,
+            ),
+            map(
+                tuple((tag("double"), peek(not(alphanumeric_or_underscore)))),
+                |_| Ty::Double,
+            ),
+            map(
+                tuple((tag("uuid"), peek(not(alphanumeric_or_underscore)))),
+                |_| Ty::Uuid,
+            ),
             map(
                 tuple((
                     tag("list"),