diff --git a/lib/influxdb/client/http.rb b/lib/influxdb/client/http.rb
index c4a7cf1..f2d623c 100644
--- a/lib/influxdb/client/http.rb
+++ b/lib/influxdb/client/http.rb
@@ -2,6 +2,7 @@
 require 'cgi'
 require 'net/http'
 require 'net/https'
+require 'zlib'
 
 module InfluxDB
   # rubocop:disable Metrics/MethodLength
@@ -22,7 +23,8 @@ def get(url, options = {})
     end
 
     def post(url, data)
-      headers = { "Content-Type" => "application/octet-stream" }
+      headers = { "Content-Type" => "application/octet-stream",
+                  "Content-Encoding" => "gzip" }
       connect_with_retry do |http|
         response = do_request http, Net::HTTP::Post.new(url, headers), data
 
@@ -70,7 +72,7 @@ def connect_with_retry
 
     def do_request(http, req, data = nil)
       req.basic_auth config.username, config.password if basic_auth?
-      req.body = data if data
+      req.body = Zlib.gzip(data, level: Zlib::BEST_SPEED) if data
       http.request(req)
     end
 
diff --git a/spec/influxdb/cases/retry_requests_spec.rb b/spec/influxdb/cases/retry_requests_spec.rb
index e608cb5..c9f9a52 100644
--- a/spec/influxdb/cases/retry_requests_spec.rb
+++ b/spec/influxdb/cases/retry_requests_spec.rb
@@ -36,7 +36,7 @@
       stub_request(:post, "http://influxdb.test:9999/write").with(
         query:   { u: "username", p: "password", precision: 's', db: database },
         headers: { "Content-Type" => "application/octet-stream" },
-        body:    body
+        body:    Zlib.gzip(body, level: 1)
       ).to_raise(Timeout::Error)
     end
 
@@ -76,7 +76,7 @@
           .with(
             query:   { u: "username", p: "password", precision: 's', db: database },
             headers: { "Content-Type" => "application/octet-stream" },
-            body:    body
+            body:    Zlib.gzip(body, level: 1)
           )
           .to_raise(Timeout::Error).then
           .to_raise(Timeout::Error).then
@@ -95,7 +95,7 @@
       stub_request(:post, "http://influxdb.test:9999/write").with(
         query:   { u: "username", p: "password", precision: 's', db: database },
         headers: { "Content-Type" => "application/octet-stream" },
-        body:    body
+        body:    Zlib.gzip(body, level: 1)
       ).to_return(status: 401)
 
       expect { client.write_point(series, data) }.to raise_error(InfluxDB::AuthenticationError)
diff --git a/spec/influxdb/cases/write_points_spec.rb b/spec/influxdb/cases/write_points_spec.rb
index ad4e2c4..62f3b69 100644
--- a/spec/influxdb/cases/write_points_spec.rb
+++ b/spec/influxdb/cases/write_points_spec.rb
@@ -27,8 +27,8 @@
     before do
       stub_request(:post, "http://influxdb.test:9999/write").with(
         query:   { u: "username", p: "password", precision: 's', db: database },
-        headers: { "Content-Type" => "application/octet-stream" },
-        body:    body
+        headers: { "Content-Type" => "application/octet-stream", "Content-Encoding" => "gzip" },
+        body:    Zlib.gzip(body, level: 1)
       ).to_return(status: 204)
     end
 
@@ -63,8 +63,8 @@
       before do
         stub_request(:post, "http://influxdb.test:9999/write").with(
           query:   { u: "username", p: "password", precision: 's', db: database },
-          headers: { "Content-Type" => "application/octet-stream" },
-          body:    body
+          headers: { "Content-Type" => "application/octet-stream", "Content-Encoding" => "gzip" },
+          body:    Zlib.gzip(body, level: 1)
         ).to_return(status: 204)
       end
 
@@ -89,8 +89,8 @@
       before do
         stub_request(:post, "http://influxdb.test:9999/write").with(
           query:   { u: "username", p: "password", precision: 's', db: database },
-          headers: { "Content-Type" => "application/octet-stream" },
-          body:    body
+          headers: { "Content-Type" => "application/octet-stream", "Content-Encoding" => "gzip" },
+          body:    Zlib.gzip(body, level: 1)
         ).to_return(status: 204)
       end
 
@@ -118,8 +118,8 @@
       before do
         stub_request(:post, "http://influxdb.test:9999/write").with(
           query:   { u: "username", p: "password", precision: 'ms', db: database },
-          headers: { "Content-Type" => "application/octet-stream" },
-          body:    body
+          headers: { "Content-Type" => "application/octet-stream", "Content-Encoding" => "gzip" },
+          body:    Zlib.gzip(body, level: 1)
         ).to_return(status: 204)
       end
       it "should POST multiple points" do
@@ -144,8 +144,8 @@
       before do
         stub_request(:post, "http://influxdb.test:9999/write").with(
           query:   { u: "username", p: "password", precision: 's', db: database, rp: 'rp_1_hour' },
-          headers: { "Content-Type" => "application/octet-stream" },
-          body:    body
+          headers: { "Content-Type" => "application/octet-stream", "Content-Encoding" => "gzip" },
+          body:    Zlib.gzip(body, level: 1)
         ).to_return(status: 204)
       end
       it "should POST multiple points" do
@@ -170,8 +170,8 @@
       before do
         stub_request(:post, "http://influxdb.test:9999/write").with(
           query:   { u: "username", p: "password", precision: 's', db: 'overriden_db' },
-          headers: { "Content-Type" => "application/octet-stream" },
-          body:    body
+          headers: { "Content-Type" => "application/octet-stream", "Content-Encoding" => "gzip" },
+          body:    Zlib.gzip(body, level: 1)
         ).to_return(status: 204)
       end
       it "should POST multiple points" do
diff --git a/spec/influxdb/client_spec.rb b/spec/influxdb/client_spec.rb
index bf40b8c..54b68e2 100644
--- a/spec/influxdb/client_spec.rb
+++ b/spec/influxdb/client_spec.rb
@@ -35,7 +35,7 @@
 
     it "POST" do
       stub_request(:post, stub_url).with(headers: auth_header).to_return(status: 204)
-      expect(subject.post(url, {})).to be_a(Net::HTTPNoContent)
+      expect(subject.post(url, "{}")).to be_a(Net::HTTPNoContent)
     end
   end