diff --git a/Dockerfile b/Dockerfile
index 4f3e6a155b9..5b50b8c2751 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -67,7 +67,7 @@ COPY --from=wasm-libs-builder /workspace/ /
 FROM wasm-base AS wasm-bin-builder
 RUN apt update && apt install -y wabt
 # pinned go version
-RUN curl -L https://golang.org/dl/go1.25.1.linux-`dpkg --print-architecture`.tar.gz | tar -C /usr/local -xzf -
+RUN curl -L https://golang.org/dl/go1.25.8.linux-`dpkg --print-architecture`.tar.gz | tar -C /usr/local -xzf -
 COPY ./Makefile ./go.mod ./go.sum ./
 COPY ./arbcompress ./arbcompress
 COPY ./arbos ./arbos
@@ -140,6 +140,7 @@ RUN touch -a -m crates/prover/src/lib.rs
 RUN NITRO_BUILD_IGNORE_TIMESTAMPS=1 make build-prover-lib
 RUN NITRO_BUILD_IGNORE_TIMESTAMPS=1 make build-prover-bin
 RUN NITRO_BUILD_IGNORE_TIMESTAMPS=1 make build-jit
+RUN NITRO_BUILD_IGNORE_TIMESTAMPS=1 make build-validation-server
 
 FROM scratch AS prover-export
 COPY --from=prover-builder /workspace/target/ /
@@ -344,6 +345,13 @@ COPY --from=module-root-calc /workspace/target/machines/latest/machine.wavm.br /
 COPY --from=module-root-calc /workspace/target/machines/latest/until-host-io-state.bin /home/user/target/machines/latest/
 COPY --from=module-root-calc /workspace/target/machines/latest/module-root.txt /home/user/target/machines/latest/
 COPY --from=module-root-calc /workspace/target/machines/latest/replay.wasm /home/user/target/machines/latest/
+COPY --from=prover-export /bin/validator /usr/local/bin/
+# Symlink legacy machine dirs into /home/user/target/machines so the Rust
+# validator can serve all module roots from a single --root-path.
+RUN for dir in /home/user/nitro-legacy/machines/*/; do \
+      name=$(basename "$dir"); \
+      [ "$name" != "latest" ] && ln -sf "$dir" /home/user/target/machines/"$name" || true; \
+    done
 RUN export DEBIAN_FRONTEND=noninteractive && \
     apt-get update && \
     apt-get install -y \
diff --git a/nitro-testnode b/nitro-testnode
index a8f87ada672..c94a36ece78 160000
--- a/nitro-testnode
+++ b/nitro-testnode
@@ -1 +1 @@
-Subproject commit a8f87ada672eaaea6f9e9c508d439dfd85f471b3
+Subproject commit c94a36ece789a3d8c8163d85e68af36afb21ae45
diff --git a/staker/block_validator.go b/staker/block_validator.go
index fb0f3c752a2..4f31b53aab6 100644
--- a/staker/block_validator.go
+++ b/staker/block_validator.go
@@ -203,8 +203,8 @@ func (c *BlockValidatorConfig) Validate() error {
 			if err != nil {
 				return fmt.Errorf("failed parsing validation server's url:%s err: %w", serverUrl, err)
 			}
-			if u.Scheme != "ws" && u.Scheme != "wss" {
-				return fmt.Errorf("validation server's url scheme is unsupported, it should either be ws or wss, url:%s", serverUrl)
+			if u.Scheme != "ws" && u.Scheme != "wss" && u.Scheme != "http" && u.Scheme != "https" {
+				return fmt.Errorf("validation server's url scheme is unsupported, it should be ws, wss, http, or https, url:%s", serverUrl)
 			}
 		}
 	}
@@ -928,7 +928,7 @@ func (v *BlockValidator) advanceValidations(ctx context.Context) (*arbutil.Messa
 		}
 		v.testingProgressMadeMutex.Unlock()
 
-		log.Trace("result validated", "count", v.validated(), "blockHash", v.lastValidGS.BlockHash)
+		log.Info("block validated", "count", v.validated(), "blockHash", v.lastValidGS.BlockHash, "batch", v.lastValidGS.Batch, "posInBatch", v.lastValidGS.PosInBatch)
 	}
 }