diff --git a/Cargo.toml b/Cargo.toml
index 220ff72..1a3695c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -37,7 +37,7 @@ document-features = { version = "0.2", optional = true }
 default = ["git2", "tzdb"]
 
 [dev-dependencies]
-winnow = "0.5.33"
+winnow = "0.6"
 
 [workspace]
 members = ["example_shadow", "example_shadow_hook", "example_wasm"]
diff --git a/src/date_time.rs b/src/date_time.rs
index 97af264..1e399bc 100644
--- a/src/date_time.rs
+++ b/src/date_time.rs
@@ -113,7 +113,7 @@ mod tests {
         use std::num::{NonZeroU32, NonZeroU8};
         use winnow::ascii::{digit1, space1};
         use winnow::error::{ContextError, ParseError};
-        use winnow::token::{tag, take};
+        use winnow::token::{literal, take};
         use winnow::{PResult, Parser};
 
         fn u8_len2(input: &mut &str) -> PResult<u8> {
@@ -138,20 +138,20 @@ mod tests {
         ) -> Result<(), ParseError<&str, ContextError>> {
             (
                 non_zero_u32,
-                tag('-'),
+                literal('-'),
                 non_zero_u8_len2::<12>,
-                tag('-'),
+                literal('-'),
                 non_zero_u8_len2::<31>,
                 space1,
                 u8_len2,
-                tag(':'),
+                literal(':'),
                 u8_len2,
-                tag(':'),
+                literal(':'),
                 u8_len2,
                 space1,
-                tag('+'),
+                literal('+'),
                 u8_len2,
-                tag(':'),
+                literal(':'),
                 u8_len2,
             )
                 .parse(input)?;