diff --git a/.changes/unreleased/Dependency-20220815-182731.yaml b/.changes/unreleased/Dependency-20220815-182731.yaml
new file mode 100644
index 00000000000..6b81be678c2
--- /dev/null
+++ b/.changes/unreleased/Dependency-20220815-182731.yaml
@@ -0,0 +1,7 @@
+kind: Dependency
+body: "Bump mashumaro[msgpack] from 3.0.3 to 3.0.4 in /core"
+time: 2022-08-15T18:27:31.00000Z
+custom:
+  Author: dependabot[bot]
+  Issue: 4904
+  PR: 5649
diff --git a/core/setup.py b/core/setup.py
index f893b7d5e43..e5c0389e730 100644
--- a/core/setup.py
+++ b/core/setup.py
@@ -55,7 +55,7 @@
         "hologram>=0.0.14,<=0.0.15",
         "isodate>=0.6,<0.7",
         "logbook>=1.5,<1.6",
-        "mashumaro[msgpack]==3.0.3",
+        "mashumaro[msgpack]==3.0.4",
         "minimal-snowplow-tracker==0.0.2",
         "networkx>=2.3,<2.8.1;python_version<'3.8'",
         "networkx>=2.3,<3;python_version>='3.8'",