diff --git a/.gitignore b/.gitignore
index 2ba4133..ca678c3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,7 +9,7 @@ __pycache__/
 
 # C extensions
 *.so
-
+.history
 # Distribution / packaging
 .Python
 build/
diff --git a/Dockerfile b/Dockerfile
index 95e907e..325acca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,7 @@ ARG AGENCY_INBOUND_PORT
 ARG AGENCY_ENDPOINT
 ARG GENESIS_URL
 
-RUN pip install aries-cloudagent
+RUN pip install aries-cloudagent==0.5.3
 RUN pip install pickledb
 
 WORKDIR /src