diff --git a/README.md b/README.md
index 8e67480..cb6eaee 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,5 @@
 # clj-test-containers
 
-[![javahippie](https://circleci.com/gh/javahippie/clj-test-containers.svg?style=svg)](<LINK>)
-
 [![Clojars Project](http://clojars.org/clj-test-containers/latest-version.svg)](http://clojars.org/clj-test-containers)
 
 ## What it is
@@ -24,7 +22,7 @@ The library provides a set of functions to interact with the testcontainers. A s
                    (tc/bind-filesystem! {:host-path "/tmp"
                                          :container-path "/opt"
                                          :mode :read-only})
-                   (tc/start!))
+                   (tc/start!)))
 
 (do-database-testing (:host container)
                      (get (:mapped-ports container) 5432))
@@ -41,7 +39,7 @@ If you'd rather create a container from a Dockerfile in your project, it could l
 (def container  (-> (tc/create-from-docker-file {:env-vars {"FOO" "bar"}
                                                  :exposed-ports [80]
                                                  :docker-file "resources/Dockerfile"})
-                    (tc/start!))
+                    (tc/start!)))
 ```
 
 If you prefer to use prebuilt containers from the Testcontainers project, you can do it like this
@@ -52,7 +50,7 @@ If you prefer to use prebuilt containers from the Testcontainers project, you ca
 
 (def container  (-> (tc/init {:container (PostgreSQLContainer. "postgres:12.2")
 	                           :exposed-ports [5432]})
-                    (tc/start!))
+                    (tc/start!)))
 ```
 
 ## Functions and Properties
@@ -229,7 +227,7 @@ Starts the Testcontainer, which was defined by `create`
 ```clojure
 (def container (create {:image-name "alpine:3.2"
                         :exposed-ports [80]
-                        :env-vars {"MAGIC_NUMBER" "42"})
+                        :env-vars {"MAGIC_NUMBER" "42"}}))
 
 (start! container)
 ```
@@ -255,7 +253,7 @@ The `container-config`
 ```clojure
 (def container (create {:image-name "alpine:3.2"
                         :exposed-ports [80]
-                        :env-vars {"MAGIC_NUMBER" "42"})
+                        :env-vars {"MAGIC_NUMBER" "42"}}))
 
 (start! container)
 (stop! container)
@@ -404,7 +402,7 @@ Creates a network. The optional map accepts config values for enabling ipv6 and
 ```clojure
 ;;Create with config
 (create-network {:ipv6 false
-                 :driver "overlay")
+                 :driver "overlay"})
 
 ;;Create with default config
 (create-network)
diff --git a/src/clj_test_containers/core.clj b/src/clj_test_containers/core.clj
index 3a3b999..697599b 100644
--- a/src/clj_test_containers/core.clj
+++ b/src/clj_test_containers/core.clj
@@ -17,7 +17,8 @@
    (org.testcontainers.images.builder
     ImageFromDockerfile)
    (org.testcontainers.utility
-    MountableFile)))
+    MountableFile
+    ResourceReaper)))
 
 (defn- resolve-bind-mode
   (^BindMode [bind-mode]
@@ -27,7 +28,7 @@
 
 (defn- reaper-instance
   []
-  (org.testcontainers.utility.ResourceReaper/instance))
+  (ResourceReaper/instance))
 
 (defmulti wait
   "Sets a wait strategy to the container.  Supports :http, :health and :log as
@@ -278,10 +279,10 @@
                    [port]
                    [port (.getMappedPort container port)])
         mapped-ports (into {} (map map-port) exposed-ports)
-        container-id (.getContainerId container)
-        image-name (.getDockerImageName container)
+        container-id ^String (.getContainerId container)
+        image-name ^String (.getDockerImageName container)
         logger (log log-to container)]
-    (.registerContainerForCleanup (reaper-instance)
+    (.registerContainerForCleanup ^ResourceReaper (reaper-instance)
                                   container-id
                                   image-name)
     (-> container-config
@@ -317,7 +318,7 @@
 
      (let [network (.build builder)
            network-name (.getName network)]
-       (.registerNetworkIdForCleanup (reaper-instance) network-name)
+       (.registerNetworkIdForCleanup ^ResourceReaper (reaper-instance) network-name)
        {:network network
         :name network-name
         :ipv6 (.getEnableIpv6 network)
@@ -328,7 +329,7 @@
 (defn perform-cleanup!
   "Stops and removes all container instances which were created in the active JVM or REPL session"
   []
-  (.performCleanup (reaper-instance)))
+  (.performCleanup ^ResourceReaper (reaper-instance)))
 
 
 ;;; REPL Helpers