diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e6d6814..237ed3f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        toolchain: [stable, 1.65.0]
+        toolchain: [stable, 1.70.0]
         command:
           - name: Check
             command: check
diff --git a/Cargo.toml b/Cargo.toml
index e62d1a0..bc99a69 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,7 @@ documentation = "https://docs.rs/matchtigs"
 homepage = "https://github.com/algbio/matchtigs"
 repository = "https://github.com/algbio/matchtigs"
 edition = "2021"
-rust-version = "1.65.0"
+rust-version = "1.70.0"
 license-file = "LICENSE.txt"
 
 [lib]
diff --git a/README.md b/README.md
index b2b1dc2..0733508 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ mamba install -c conda-forge -c bioconda matchtigs
 
 #### Requirements
 
-Rust `>= 1.65.0`, best installed via [rustup](https://rustup.rs/).
+Rust `>= 1.70.0`, best installed via [rustup](https://rustup.rs/).
 
 #### Installation