diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 522da41..fbd9f3b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -104,7 +104,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.87"  # STABLE
+        toolchain: "1.88"  # STABLE
     - uses: Swatinem/rust-cache@v2
     - name: Check documentation
       env:
@@ -119,7 +119,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.87"  # STABLE
+        toolchain: "1.88"  # STABLE
         components: rustfmt
     - uses: Swatinem/rust-cache@v2
     - name: Check formatting
@@ -135,7 +135,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.87"  # STABLE
+        toolchain: "1.88"  # STABLE
         components: clippy
     - uses: Swatinem/rust-cache@v2
     - name: Install SARIF tools
diff --git a/crates/core/src/reflection.rs b/crates/core/src/reflection.rs
index 0525cd3..acc35e0 100644
--- a/crates/core/src/reflection.rs
+++ b/crates/core/src/reflection.rs
@@ -153,7 +153,7 @@ impl<'a> Case<'a> {
 impl fmt::Debug for Case<'_> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         let predicate = if let Some(ref predicate) = self.predicate {
-            format!("Some({})", predicate)
+            format!("Some({predicate})")
         } else {
             "None".to_owned()
         };
diff --git a/crates/tree/examples/failures.rs b/crates/tree/examples/failures.rs
index 9ba640c..98bbe0b 100644
--- a/crates/tree/examples/failures.rs
+++ b/crates/tree/examples/failures.rs
@@ -7,7 +7,7 @@ fn main() {
     let pred = predicates::ord::eq(expected);
     if let Some(case) = pred.find_case(false, &actual) {
         let tree = case.tree();
-        println!("{}", tree);
+        println!("{tree}");
     }
 
     let expected = [1, 2, 3];
@@ -15,7 +15,7 @@ fn main() {
     let pred = predicates::iter::in_iter(IntoIterator::into_iter(expected));
     if let Some(case) = pred.find_case(false, &actual) {
         let tree = case.tree();
-        println!("{}", tree);
+        println!("{tree}");
     }
 
     let expected = "Hello
@@ -29,7 +29,7 @@ Goodbye!";
     let pred = predicates::ord::eq(expected);
     if let Some(case) = pred.find_case(false, &actual) {
         let tree = case.tree();
-        println!("{}", tree);
+        println!("{tree}");
     }
 
     let expected = "Hello
@@ -43,6 +43,6 @@ Goodbye!";
     let pred = predicates::str::diff(expected);
     if let Some(case) = pred.find_case(false, actual) {
         let tree = case.tree();
-        println!("{}", tree);
+        println!("{tree}");
     }
 }
diff --git a/crates/tree/src/lib.rs b/crates/tree/src/lib.rs
index 116a94b..055184b 100644
--- a/crates/tree/src/lib.rs
+++ b/crates/tree/src/lib.rs
@@ -70,8 +70,8 @@ struct Displayable {
 
 impl Displayable {
     fn new(display: &dyn std::fmt::Display) -> Self {
-        let primary = format!("{}", display);
-        let alternate = format!("{:#}", display);
+        let primary = format!("{display}");
+        let alternate = format!("{display:#}");
         Self { primary, alternate }
     }
 }