diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a5f79a0..9968a9e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -10,7 +10,7 @@ jobs:
       matrix:
         rust:
           - stable
-          - 1.74.0
+          - 1.78.0
     steps:
       - name: Checkout sources
         uses: actions/checkout@v2
@@ -39,7 +39,7 @@ jobs:
       matrix:
         rust:
           - stable
-          - 1.74.0
+          - 1.78.0
     steps:
       - name: Checkout sources
         uses: actions/checkout@v2
diff --git a/README.md b/README.md
index a47e3c2..28db5ef 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ For example,
 
 ## Download
 
-onetun is available to install from [crates.io](https://crates.io/crates/onetun) with Rust ≥1.74.0:
+onetun is available to install from [crates.io](https://crates.io/crates/onetun) with Rust ≥1.78.0:
 
 ```shell
 cargo install onetun
@@ -37,7 +37,7 @@ docker run --rm --name onetun --user 1000 -p 8080:8080 aramperes/onetun \
     0.0.0.0:8080:192.168.4.2:8080 [...options...]
 ```
 
-You can also build onetun locally, using Rust ≥1.74.0:
+You can also build onetun locally, using Rust ≥1.78.0:
 
 ```shell
 git clone https://github.com/aramperes/onetun && cd onetun