diff --git a/Cargo.toml b/Cargo.toml
index 233dda6..0f9c6c7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ndarray-slice"
-version = "0.3.1"
+version = "0.4.0"
 rust-version = "1.65.0"
 edition = "2021"
 authors = ["Rouven Spreckels <rs@qu1x.dev>"]
@@ -36,8 +36,8 @@ all-features = true
 rustdoc-args = ["--cfg", "docsrs"]
 
 [dependencies]
-ndarray = { version = "0.15.6", default-features = false }
-stacker = { version = "0.1.15", optional = true }
+ndarray = { version = "0.16.1", default-features = false }
+stacker = { version = "0.1.17", optional = true }
 rayon = { version = "1.10.0", optional = true }
 
 [dev-dependencies]
diff --git a/RELEASES.md b/RELEASES.md
index 3fb8ca3..665fed9 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -1,3 +1,7 @@
+# Version 0.4.0 (2024-09-14)
+
+  * Bump dependencies.
+
 # Version 0.3.1 (2024-06-13)
 
   * Spill recursion stack over to heap if necessary.