diff --git a/.gitpod.Dockerfile b/.gitpod.Dockerfile
index fdfc6145c7..cee0aeddc2 100644
--- a/.gitpod.Dockerfile
+++ b/.gitpod.Dockerfile
@@ -42,7 +42,9 @@ RUN apt-get update \
   tclsh \
   uuid \
   && apt-get clean \
-  && rm -rf /var/lib/apt/lists/*
+  && rm -rf /var/lib/apt/lists/* \
+  && apt-get install -y capnproto libcapnp-dev
+
 
 # set out workspace
 ENV VTR_ROOT=/workspace/vtr-verilog-to-routing
diff --git a/Dockerfile b/Dockerfile
index 2f6d0b26f8..a8065ab946 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -32,6 +32,7 @@ RUN apt-get update -qq \
     tclsh \
     uuid \
 # Install python packages
+    && apt-get install -y capnproto libcapnp-dev \
     && pip install -r requirements.txt \
 # Cleanup
     && apt-get autoclean && apt-get clean && apt-get -y autoremove \