diff --git a/project.clj b/project.clj
index 7630cfa2..d1173132 100644
--- a/project.clj
+++ b/project.clj
@@ -1,7 +1,6 @@
 (defproject org.martinklepsch/clj-http-lite "0.4.3"
   :description "A Clojure HTTP library similar to clj-http, but more lightweight."
   :url "https://github.com/martinklepsch/clj-http-lite/"
-  :warn-on-reflection false
   :license {:name "MIT"
             :url "http://www.opensource.org/licenses/mit-license.php"}
   :dependencies [[org.clojure/clojure "1.8.0"]
diff --git a/src/clj_http/lite/client.clj b/src/clj_http/lite/client.clj
index 2878e4c6..f0aeda8d 100644
--- a/src/clj_http/lite/client.clj
+++ b/src/clj_http/lite/client.clj
@@ -10,6 +10,8 @@
            (java.net URL UnknownHostException))
   (:refer-clojure :exclude (get update)))
 
+(set! *warn-on-reflection* true)
+
 (defn update [m k f & args]
   (assoc m k (apply f (m k) args)))
 
diff --git a/src/clj_http/lite/core.clj b/src/clj_http/lite/core.clj
index 246d1d2f..5bdc6b05 100644
--- a/src/clj_http/lite/core.clj
+++ b/src/clj_http/lite/core.clj
@@ -4,6 +4,8 @@
   (:import (java.io ByteArrayOutputStream InputStream IOException)
            (java.net URI URL HttpURLConnection)))
 
+(set! *warn-on-reflection* true)
+
 (defn parse-headers
   "Takes a URLConnection and returns a map of names to values.
 
@@ -53,7 +55,7 @@
                       (when server-port (str ":" server-port))
                       uri
                       (when query-string (str "?" query-string)))
-        conn (.openConnection ^URL (URL. http-url))]
+        ^HttpURLConnection conn (.openConnection ^URL (URL. http-url))]
     (when (and content-type character-encoding)
       (.setRequestProperty conn "Content-Type" (str content-type
                                                     "; charset="
@@ -63,8 +65,8 @@
     (doseq [[h v] headers]
       (.setRequestProperty conn h v))
     (when (false? follow-redirects)
-      (.setInstanceFollowRedirects ^HttpURLConnection conn false))
-    (.setRequestMethod ^HttpURLConnection conn (.toUpperCase (name request-method)))
+      (.setInstanceFollowRedirects conn false))
+    (.setRequestMethod conn (.toUpperCase (name request-method)))
     (when body
       (.setDoOutput conn true))
     (when socket-timeout
@@ -78,7 +80,7 @@
       (with-open [out (.getOutputStream conn)]
         (io/copy body out)))
     (merge {:headers (parse-headers conn)
-            :status (.getResponseCode ^HttpURLConnection conn)
+            :status (.getResponseCode conn)
             :body (when-not (= request-method :head)
                     (coerce-body-entity req conn))}
            (when save-request?
diff --git a/src/clj_http/lite/links.clj b/src/clj_http/lite/links.clj
index 87f9a807..3456439d 100644
--- a/src/clj_http/lite/links.clj
+++ b/src/clj_http/lite/links.clj
@@ -3,6 +3,8 @@
 
   Imported from https://github.com/dakrone/clj-http/blob/217393258e7863514debece4eb7b23a7a3fa8bd9/src/clj_http/links.clj")
 
+(set! *warn-on-reflection* true)
+
 (def ^:private quoted-string
   #"\"((?:[^\"]|\\\")*)\"")
 
diff --git a/src/clj_http/lite/util.clj b/src/clj_http/lite/util.clj
index c05eedc8..32b65232 100644
--- a/src/clj_http/lite/util.clj
+++ b/src/clj_http/lite/util.clj
@@ -6,6 +6,8 @@
            (java.util.zip InflaterInputStream DeflaterInputStream
                           GZIPInputStream GZIPOutputStream)))
 
+(set! *warn-on-reflection* true)
+
 (defn utf8-bytes
   "Returns the UTF-8 bytes corresponding to the given string."
   [#^String s]