diff --git a/go.mod b/go.mod
new file mode 100644
index 000000000000..8aaed232e4d6
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,8 @@
+module beam-runtime
+
+go 1.25.0
+
+require (
+	github.com/golang/snappy v0.0.1 // indirect
+	github.com/linkedin/goavro/v2 v2.14.0 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 000000000000..b5b851e345cb
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,14 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/golang/snappy v0.0.1 h1:Qgr9rKW7uDUkrbSmQeiDsGa8SjGyCOGtuasMWwvp2P4=
+github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/linkedin/goavro/v2 v2.14.0 h1:aNO/js65U+Mwq4yB5f1h01c3wiM458qtRad1DN0CMUI=
+github.com/linkedin/goavro/v2 v2.14.0/go.mod h1:KXx+erlq+RPlGSPmLF7xGo6SAbh8sCQ53x064+ioxhk=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.5/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/runners/spark/3/build.gradle b/runners/spark/3/build.gradle
index 5103805db347..3ccf389349ca 100644
--- a/runners/spark/3/build.gradle
+++ b/runners/spark/3/build.gradle
@@ -34,7 +34,7 @@ createJavaExamplesArchetypeValidationTask(type: 'Quickstart', runner: 'Spark')
 
 // Additional supported Spark versions (used in compatibility tests)
 def sparkVersions = [
-    "350": "3.5.0",
+    "350": "3.5.3",
     "341": "3.4.1",
     "340": "3.4.0",
     "332": "3.3.2",