diff --git a/.github/workflows/ocb3.yml b/.github/workflows/ocb3.yml
index 5c47c546..e077bb07 100644
--- a/.github/workflows/ocb3.yml
+++ b/.github/workflows/ocb3.yml
@@ -23,7 +23,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.60.0 # MSRV
+          - 1.65.0 # MSRV
           - stable
         target:
           - armv7a-none-eabi
@@ -44,7 +44,7 @@ jobs:
         include:
           # 32-bit Linux
           - target: i686-unknown-linux-gnu
-            rust: 1.60.0 # MSRV
+            rust: 1.65.0 # MSRV
             deps: sudo apt update && sudo apt install gcc-multilib
           - target: i686-unknown-linux-gnu
             rust: stable
@@ -52,7 +52,7 @@ jobs:
 
           # 64-bit Linux
           - target: x86_64-unknown-linux-gnu
-            rust: 1.60.0 # MSRV
+            rust: 1.65.0 # MSRV
           - target: x86_64-unknown-linux-gnu
             rust: stable
     steps:
diff --git a/ocb3/Cargo.toml b/ocb3/Cargo.toml
index 4be3484e..7798b5b4 100644
--- a/ocb3/Cargo.toml
+++ b/ocb3/Cargo.toml
@@ -13,7 +13,7 @@ documentation = "https://docs.rs/ocb3"
 repository = "https://github.com/RustCrypto/AEADs"
 keywords = ["aead", "encryption", "ocb"]
 categories = ["cryptography", "no-std"]
-rust-version = "1.60"
+rust-version = "1.65"
 
 [dependencies]
 aead = { version = "=0.6.0-pre.0", default-features = false }