diff --git a/Makefile b/Makefile
index 56bf4df3c6..ca299df2e6 100644
--- a/Makefile
+++ b/Makefile
@@ -212,7 +212,7 @@ $(arbitrator_jit): $(DEP_PREDICATE) .make/cbrotli-lib $(jit_files)
 $(arbitrator_cases)/rust/target/wasm32-wasi/release/%.wasm: $(arbitrator_cases)/rust/src/bin/%.rs $(arbitrator_cases)/rust/src/lib.rs
 	cargo build --manifest-path $(arbitrator_cases)/rust/Cargo.toml --release --target wasm32-wasi --bin $(patsubst $(arbitrator_cases)/rust/target/wasm32-wasi/release/%.wasm,%, $@)
 
-$(arbitrator_cases)/go/main: $(arbitrator_cases)/go/main.go
+$(arbitrator_cases)/go/main: $(arbitrator_cases)/go/main.go .make/solgen
 	cd $(arbitrator_cases)/go && GOOS=js GOARCH=wasm go build main.go
 
 $(arbitrator_generated_header): $(DEP_PREDICATE) arbitrator/prover/src/lib.rs arbitrator/prover/src/utils.rs
diff --git a/arbos/arbosState/arbosstate.go b/arbos/arbosState/arbosstate.go
index 0be5e51f8b..c87d0f224d 100644
--- a/arbos/arbosState/arbosstate.go
+++ b/arbos/arbosState/arbosstate.go
@@ -319,6 +319,14 @@ func (state *ArbosState) UpgradeArbosVersion(
 				ensure(state.chainOwners.ClearList())
 			}
 		case 11:
+			if !chainConfig.DebugMode() {
+				// This upgrade isn't finalized so we only want to support it for testing
+				return fmt.Errorf(
+					"the chain is upgrading to unsupported ArbOS version %v, %w",
+					state.arbosVersion+1,
+					ErrFatalNodeOutOfDate,
+				)
+			}
 			// Update Brotli compression level for fast compression from 0 to 1
 			ensure(state.l1PricingState.SetBrotliCompressionLevel(1))
 		default: