diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 42441489d..c5a51bbe9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -81,13 +81,13 @@ jobs:
             rust: 1.68.0
             python: 3.9
 
-          # Minimum Supported Rust Version = 1.64.0
+          # Minimum Supported Rust Version = 1.65.0
           #
           # Minimum Supported Python Version = 3.7
           # This is the minimum version for which manylinux Python wheels are
           # built.
           - os: ubuntu-latest
-            rust: 1.64.0
+            rust: 1.65.0
             python: 3.7
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 709fbcfe9..bf83efd32 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## [Unreleased]
 
 ### Changes
+- Increase MSRV to 1.65.0. #4236
 - Remove upper limit on the attachment size. #4253
 
 ### Fixes
diff --git a/Cargo.toml b/Cargo.toml
index 9fe7b05a6..cf317d291 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ name = "deltachat"
 version = "1.112.3"
 edition = "2021"
 license = "MPL-2.0"
-rust-version = "1.64"
+rust-version = "1.65"
 
 [profile.dev]
 debug = 0