diff --git a/builder/docker/grain/Dockerfile b/builder/docker/grain/Dockerfile
index 711d571c..d421ff52 100644
--- a/builder/docker/grain/Dockerfile
+++ b/builder/docker/grain/Dockerfile
@@ -1,6 +1,10 @@
 FROM suborbital/subo:dev as subo
 
-FROM ghcr.io/grain-lang/grain:0.4-slim
+FROM ghcr.io/grain-lang/grain:0.5-slim
 WORKDIR /root/runnable
 COPY --from=subo /go/bin/subo /usr/local/bin/subo
+
+# Necessary to build Grain runnables
+RUN apt-get update && apt-get install curl -y && rm -rf /var/lib/apt/lists/*
+
 RUN mkdir /root/suborbital
diff --git a/builder/native.go b/builder/native.go
index 936ca9f7..f2f16f06 100644
--- a/builder/native.go
+++ b/builder/native.go
@@ -36,7 +36,7 @@ var nativeCommandsForLang = map[string]map[string][]string{
 			"tinygo build -o {{ .Name }}.wasm -target wasi .",
 		},
 		"grain": {
-			"grain compile index.gr -I _lib -o {{ .Name }}.wasm",
+			"grain compile index.gr --release -I _lib -o {{ .Name }}.wasm",
 		},
 		"typescript": {
 			"npm run build",
@@ -68,7 +68,7 @@ var nativeCommandsForLang = map[string]map[string][]string{
 			"tinygo build -o {{ .Name }}.wasm -target wasi .",
 		},
 		"grain": {
-			"grain compile index.gr -I _lib -o {{ .Name }}.wasm",
+			"grain compile index.gr --release -I _lib -o {{ .Name }}.wasm",
 		},
 		"typescript": {
 			"npm run build",