diff --git a/simulator/Dockerfile b/simulator/Dockerfile
index 3c0fb34..7c00f82 100644
--- a/simulator/Dockerfile
+++ b/simulator/Dockerfile
@@ -14,12 +14,14 @@ RUN cd /build && \
     cd /build && \
     git clone https://github.com/Comcast/parodus.git && \
     cd parodus && \
+    git checkout ad2d43b4f6e980a6cc1c1340fc82564104eb1dd8 && \
     mkdir build && \
     cd build && \
     cmake .. && make && \
     cd /build && \
     git clone https://github.com/Comcast/aker.git && \
     cd aker && \
+    git checkout cfb54022fa6e0ba70040e419d34655da955637b5 && \
     mkdir build && \
     cd build && \
     cmake .. && make