diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index e7ac0684..408220f5 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -4,7 +4,7 @@ on:
   pull_request:
 
 jobs:
-  build:
+  build-stable:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
@@ -59,3 +59,28 @@ jobs:
         #     token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
         #     working-directory: ./safetensors
         #     fail_ci_if_error: true
+
+  build-msrv:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./safetensors
+    env:
+      MSRV: "1.74"
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Install Rust ${{ env.MSRV }}
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ env.MSRV }}
+          override: true
+
+      - uses: Swatinem/rust-cache@v2
+
+      - name: Build
+        run: cargo build --all-targets --verbose
+
+      - name: Run Tests
+        run: cargo test --verbose
diff --git a/bindings/python/Cargo.toml b/bindings/python/Cargo.toml
index a1dadeed..de7692bc 100644
--- a/bindings/python/Cargo.toml
+++ b/bindings/python/Cargo.toml
@@ -2,6 +2,7 @@
 name = "safetensors-python"
 version = "0.5.3-dev.0"
 edition = "2021"
+rust-version = "1.74"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [lib]
diff --git a/safetensors/Cargo.toml b/safetensors/Cargo.toml
index 037104a3..dd303d65 100644
--- a/safetensors/Cargo.toml
+++ b/safetensors/Cargo.toml
@@ -2,6 +2,7 @@
 name = "safetensors"
 version = "0.5.3-dev.0"
 edition = "2021"
+rust-version = "1.74"
 homepage = "https://github.com/huggingface/safetensors"
 repository = "https://github.com/huggingface/safetensors"
 documentation = "https://docs.rs/safetensors/"
diff --git a/safetensors/src/tensor.rs b/safetensors/src/tensor.rs
index bee71782..42d59e04 100644
--- a/safetensors/src/tensor.rs
+++ b/safetensors/src/tensor.rs
@@ -64,8 +64,12 @@ impl core::fmt::Display for SafeTensorError {
     }
 }
 
+#[cfg(not(feature = "std"))]
 impl core::error::Error for SafeTensorError {}
 
+#[cfg(feature = "std")]
+impl std::error::Error for SafeTensorError {}
+
 struct PreparedData {
     n: u64,
     header_bytes: Vec<u8>,