diff --git a/badges/coverage.svg b/badges/coverage.svg
index 5a655df3..7c83cb1e 100644
--- a/badges/coverage.svg
+++ b/badges/coverage.svg
@@ -13,8 +13,8 @@
   <rect width="120" height="20" fill="url(#s)"/>
 </g>
 <g fill="#fff" text-anchor="middle" font-family="Verdana,Geneva,DejaVu Sans,sans-serif" text-rendering="geometricPrecision" font-size="110">
-  <text aria-hidden="true" x="340" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="580">coverage</text>
-  <text x="340" y="140" transform="scale(.1)" textLength="580">coverage</text>
+  <text aria-hidden="true" x="340" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="560">coverage</text>
+  <text x="340" y="140" transform="scale(.1)" textLength="560">coverage</text>
   <text aria-hidden="true" x="940" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="400">72.2%</text>
   <text x="940" y="140" transform="scale(.1)" textLength="400">72.2%</text>
 </g>
diff --git a/pyproject.toml b/pyproject.toml
index 6b608ef4..aa193ad1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ dependencies = [
     "http-message-signatures==0.5.0",
     "implicitdict==4.0.1",
     "jwcrypto==1.5.7",
-    "marshmallow==4.1.2",
+    "marshmallow==4.3.0",
     "pandas>=2.3.0",
     "pika==1.3.2",
     "psycopg2-binary==2.9.12",
diff --git a/uv.lock b/uv.lock
index 701ef050..b7a613e3 100644
--- a/uv.lock
+++ b/uv.lock
@@ -541,7 +541,7 @@ requires-dist = [
     { name = "implicitdict", specifier = "==4.0.1" },
     { name = "jwcrypto", specifier = "==1.5.7" },
     { name = "loguru", specifier = "==0.7.3" },
-    { name = "marshmallow", specifier = "==4.1.2" },
+    { name = "marshmallow", specifier = "==4.3.0" },
     { name = "pandas", specifier = ">=2.3.0" },
     { name = "pika", specifier = "==1.3.2" },
     { name = "psycopg2-binary", specifier = "==2.9.12" },
@@ -880,11 +880,11 @@ wheels = [
 
 [[package]]
 name = "marshmallow"
-version = "4.1.2"
+version = "4.3.0"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/e9/e1/5edfd1edf05d3cc98415b0810ca45fa19d7dee6def0d0ec639eb4eb14e20/marshmallow-4.1.2.tar.gz", hash = "sha256:083f250643d2e75fd363f256aeb6b1af369a7513ad37647ce4a601f6966e3ba5", size = 220974, upload-time = "2025-12-22T06:16:35.283Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/25/7e/1dbd4096eb7c148cd2841841916f78820bb85a4d80a0c25c02d30815a7fb/marshmallow-4.3.0.tar.gz", hash = "sha256:fb43c53b3fe240b8f6af37223d6ef1636f927ad9bea8ab323afad95dff090880", size = 224485, upload-time = "2026-04-03T21:46:32.72Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/af/b6/66d1748fb45453e337c8a334dafed7b818e72ac9cf9d105a56e0cf21865f/marshmallow-4.1.2-py3-none-any.whl", hash = "sha256:a8cfa18bd8d0e5f7339e734edf84815fe8db1bdb57358c7ccc05472b746eeadc", size = 48360, upload-time = "2025-12-22T06:16:33.994Z" },
+    { url = "https://files.pythonhosted.org/packages/f4/e0/ff24e25218bb59eb6290a530cea40651b14068b6e3659b20f9c175179632/marshmallow-4.3.0-py3-none-any.whl", hash = "sha256:46c4fe6984707e3cbd485dfebbf0a59874f58d695aad05c1668d15e8c6e13b46", size = 49148, upload-time = "2026-04-03T21:46:31.241Z" },
 ]
 
 [[package]]