diff --git a/CHANGELOG.md b/CHANGELOG.md
index 70fa1be04..14b527828 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [v0.0.11] - TBD
 
-Uses libvips v8.16.0-rc1, compiled with Emscripten v3.1.69.
+Uses libvips v8.16.0-rc2, compiled with Emscripten v3.1.70.
 
 ### Changed
 
diff --git a/Dockerfile b/Dockerfile
index 0ad9e18bb..0579326ca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # https://github.com/emscripten-core/emsdk
-FROM docker.io/emscripten/emsdk:3.1.69
+FROM docker.io/emscripten/emsdk:3.1.70
 
 # Path settings
 ENV \
@@ -24,7 +24,7 @@ RUN \
 
 # Emscripten patches
 RUN \
-  curl -Ls https://github.com/emscripten-core/emscripten/compare/3.1.69...kleisauke:wasm-vips-3.1.69.patch | patch -p1 -d $EMSDK/upstream/emscripten && \
+  curl -Ls https://github.com/emscripten-core/emscripten/compare/3.1.70...kleisauke:wasm-vips-3.1.70.patch | patch -p1 -d $EMSDK/upstream/emscripten && \
   emcc --clear-cache && embuilder build sysroot --force
 
 # Rust