diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3a3d8128..efa54a0e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -49,7 +49,7 @@ jobs:
     - name: No-default features
       run: cargo test --workspace --no-default-features
   msrv:
-    name: "Check MSRV: 1.70"  # MSRV
+    name: "Check MSRV: 1.73"  # MSRV
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository
@@ -57,7 +57,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.70"  # MSRV
+        toolchain: "1.73"  # MSRV
     - uses: Swatinem/rust-cache@v2
     - name: Default features
       run: cargo check --workspace --all-targets
@@ -119,7 +119,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.70"  # MSRV
+        toolchain: "1.73"  # MSRV
         components: clippy
     - uses: Swatinem/rust-cache@v2
     - name: Install SARIF tools
diff --git a/Cargo.toml b/Cargo.toml
index 51e52a05..2cdd75e2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "annotate-snippets"
 version = "0.10.0"
 edition = "2021"
-rust-version = "1.70"  # MSRV
+rust-version = "1.73"  # MSRV
 authors = ["Zibi Braniecki <gandalf@mozilla.com>"]
 description = "Library for building code annotations"
 license = "Apache-2.0/MIT"