diff --git a/Dockerfile b/Dockerfile
index ddec475..a1fd7c4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,7 +19,7 @@
 RUN set -x && \
     apt-get update && apt-get install -y ${BUILD_DEPS} ${DEPS} --no-install-recommends && rm -rf /var/lib/apt/lists/*
 
-RUN curl -s https://storage.googleapis.com/nativeclient-mirror/nacl/nacl_sdk/49.0.2623.87/naclsdk_linux.tar.bz2 | tar -xj -C /usr/local/bin --strip-components=2 pepper_49/tools/sel_ldr_x86_64
+RUN curl -s https://storage.googleapis.com/nativeclient-mirror/nacl/nacl_sdk/trunk.544461/naclsdk_linux.tar.bz2 | tar -xj -C /usr/local/bin --strip-components=2 pepper_67/tools/sel_ldr_x86_64
 
 # Get the Go binary.
 RUN curl -sSL https://dl.google.com/go/go$GO_VERSION.linux-amd64.tar.gz -o /tmp/go.tar.gz && \