diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ba2ae00..2941769 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,7 +30,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.45.0
+          - 1.53.0
           - stable
           - beta
           - nightly
diff --git a/README.md b/README.md
index 5d5696d..7508b34 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ compiler time, like `L` string literals in C.
 wchar = "0.10"
 ```
 
-*Compiler support: requires rustc 1.45+*
+*Compiler support: requires rustc 1.53+*
 
 ## Example