diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f302fcd..d4a0e40 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,10 +24,10 @@ jobs:
         include:
         - build: pinned
           os: ubuntu-18.04
-          rust: 1.23.0
+          rust: 1.34.0
         - build: pinned-win
           os: windows-2019
-          rust: 1.23.0
+          rust: 1.34.0
         - build: stable
           os: ubuntu-18.04
           rust: stable
diff --git a/README.md b/README.md
index b7dcd76..2b49506 100644
--- a/README.md
+++ b/README.md
@@ -87,7 +87,7 @@ for entry in walker.filter_entry(|e| !is_hidden(e)) {
 
 ### Minimum Rust version policy
 
-This crate's minimum supported `rustc` version is `1.23.0`.
+This crate's minimum supported `rustc` version is `1.34.0`.
 
 The current policy is that the minimum Rust version required to use this crate
 can be increased in minor version updates. For example, if `crate 1.0` requires