diff --git a/Cargo.lock b/Cargo.lock
index ed8bf516..a9671cbb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2410,7 +2410,7 @@ dependencies = [
 
 [[package]]
 name = "dora-message"
-version = "0.3.5"
+version = "0.4.0"
 dependencies = [
  "aligned-vec",
  "arrow-data",
diff --git a/Cargo.toml b/Cargo.toml
index d1635286..e1421ef7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -68,7 +68,7 @@ dora-ros2-bridge = { path = "libraries/extensions/ros2-bridge" }
 dora-ros2-bridge-msg-gen = { path = "libraries/extensions/ros2-bridge/msg-gen" }
 dora-ros2-bridge-python = { path = "libraries/extensions/ros2-bridge/python" }
 # versioned independently from the other dora crates
-dora-message = { version = "0.3.5", path = "libraries/message" }
+dora-message = { version = "0.4.0", path = "libraries/message" }
 arrow = { version = "52" }
 arrow-schema = { version = "52" }
 arrow-data = { version = "52" }
diff --git a/libraries/message/Cargo.toml b/libraries/message/Cargo.toml
index 701fbe2d..27810734 100644
--- a/libraries/message/Cargo.toml
+++ b/libraries/message/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "dora-message"
 # versioned separately from the other dora crates
-version = "0.3.5"
+version = "0.4.0"
 edition = "2021"
 documentation.workspace = true
 description.workspace = true