diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ba390de..1244c53 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -24,16 +24,16 @@ jobs:
       fail-fast: false
       matrix:
         rust: [
-          1.76.0,
-          1.77.0,
-          1.78.0,
-          1.79.0,
-          1.80.0,
           1.81.0,
           1.82.0,
           1.83.0,
           1.84.0,
           1.85.0,
+          1.86.0,
+          1.87.0,
+          1.88.0,
+          1.89.0,
+          1.90.0,
           stable,
           beta,
           nightly
@@ -63,7 +63,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: 1.85.0
+          toolchain: 1.90.0
           default: true
           components: rustfmt
 
@@ -84,7 +84,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: 1.85.0
+          toolchain: 1.90.0
           default: true
           components: clippy
 
@@ -104,7 +104,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: 1.85.0
+          toolchain: 1.90.0
           default: true
 
       - name: Install tarpaulin
diff --git a/src/probe/simple.rs b/src/probe/simple.rs
index 45397f8..703844e 100644
--- a/src/probe/simple.rs
+++ b/src/probe/simple.rs
@@ -68,9 +68,6 @@ pub struct AudioProperties {
   bits_per_sample: i32,
 }
 
-#[derive(Debug, Deserialize, PartialEq, Eq, Serialize)]
-pub struct SubtitleProperties {}
-
 impl fmt::Display for Format {
   fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
     writeln!(f, "{:30} : {}", "Format name", self.format_name)?;