diff --git a/README.md b/README.md
index d61d8e9..c057d66 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ Online Analytical Processing (OLAP) database management system.
 ```elixir
 conn = Pillar.Connection.new("http://user:password@localhost:8123/database")
 
-# Params are passed in brackets {} in SQL query, and map strtucture does fill
+# Params are passed in brackets {} in SQL query, and map structure does fill
 # query by values.
 sql = "SELECT count(*) FROM users WHERE lastname = {lastname}"
 
diff --git a/lib/pillar/http_client/httpc_adapter.ex b/lib/pillar/http_client/httpc_adapter.ex
index e8f7cc8..bd0211a 100644
--- a/lib/pillar/http_client/httpc_adapter.ex
+++ b/lib/pillar/http_client/httpc_adapter.ex
@@ -7,7 +7,8 @@ defmodule Pillar.HttpClient.HttpcAdapter do
     result =
       :httpc.request(
         :post,
-        {String.to_charlist(url), [{'te', 'application/json'}], 'application/json', post_body},
+        {String.to_charlist(url), [{~c"te", ~c"application/json"}], ~c"application/json",
+         post_body},
         options,
         []
       )
diff --git a/lib/pillar/migrations/migrate.ex b/lib/pillar/migrations/migrate.ex
index 7f718c5..45dc90e 100644
--- a/lib/pillar/migrations/migrate.ex
+++ b/lib/pillar/migrations/migrate.ex
@@ -11,7 +11,7 @@ defmodule Pillar.Migrations.Migrate do
     files_and_modules = Base.compile_migration_files(path)
 
     Enum.map(files_and_modules, fn {filename, module} ->
-      result = migrate_if_was_not_migrated(connection, filename, module.up, options)
+      result = migrate_if_was_not_migrated(connection, filename, module.up(), options)
       {filename, result}
     end)
   end
diff --git a/lib/pillar/type_convert/to_elixir.ex b/lib/pillar/type_convert/to_elixir.ex
index ba13593..6df2eab 100644
--- a/lib/pillar/type_convert/to_elixir.ex
+++ b/lib/pillar/type_convert/to_elixir.ex
@@ -187,7 +187,7 @@ defmodule Pillar.TypeConvert.ToElixir do
         datetime
 
       {:error, :utc_only_time_zone_database} ->
-        Logger.warn(
+        Logger.warning(
           "Add timezone database to your project if you want to use Timezones (tzdata or tz)."
         )
 
diff --git a/mix.lock b/mix.lock
index e5e4e3c..c866fb0 100644
--- a/mix.lock
+++ b/mix.lock
@@ -22,7 +22,7 @@
   "nimble_parsec": {:hex, :nimble_parsec, "1.2.3", "244836e6e3f1200c7f30cb56733fd808744eca61fd182f731eac4af635cc6d0b", [:mix], [], "hexpm", "c8d789e39b9131acf7b99291e93dae60ab48ef14a7ee9d58c6964f59efb570b0"},
   "parse_trans": {:hex, :parse_trans, "3.3.1", "16328ab840cc09919bd10dab29e431da3af9e9e7e7e6f0089dd5a2d2820011d8", [:rebar3], [], "hexpm", "07cd9577885f56362d414e8c4c4e6bdf10d43a8767abb92d24cbe8b24c54888b"},
   "poolboy": {:hex, :poolboy, "1.5.2", "392b007a1693a64540cead79830443abf5762f5d30cf50bc95cb2c1aaafa006b", [:rebar3], [], "hexpm", "dad79704ce5440f3d5a3681c8590b9dc25d1a561e8f5a9c995281012860901e3"},
-  "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.6", "cf344f5692c82d2cd7554f5ec8fd961548d4fd09e7d22f5b62482e5aeaebd4b0", [:make, :mix, :rebar3], [], "hexpm", "bdb0d2471f453c88ff3908e7686f86f9be327d065cc1ec16fa4540197ea04680"},
+  "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.7", "354c321cf377240c7b8716899e182ce4890c5938111a1296add3ec74cf1715df", [:make, :mix, :rebar3], [], "hexpm", "fe4c190e8f37401d30167c8c405eda19469f34577987c76dde613e838bbc67f8"},
   "tesla": {:hex, :tesla, "1.5.1", "f2ba04f5e6ace0f1954f1fb4375f55809a5f2ff491c18ccb09fbc98370d4280b", [:mix], [{:castore, "~> 0.1 or ~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:exjsx, ">= 3.0.0", [hex: :exjsx, repo: "hexpm", optional: true]}, {:finch, "~> 0.13", [hex: :finch, repo: "hexpm", optional: true]}, {:fuse, "~> 2.4", [hex: :fuse, repo: "hexpm", optional: true]}, {:gun, "~> 1.3", [hex: :gun, repo: "hexpm", optional: true]}, {:hackney, "~> 1.6", [hex: :hackney, repo: "hexpm", optional: true]}, {:ibrowse, "4.4.0", [hex: :ibrowse, repo: "hexpm", optional: true]}, {:jason, ">= 1.0.0", [hex: :jason, repo: "hexpm", optional: true]}, {:mime, "~> 1.0 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:mint, "~> 1.0", [hex: :mint, repo: "hexpm", optional: true]}, {:msgpax, "~> 2.3", [hex: :msgpax, repo: "hexpm", optional: true]}, {:poison, ">= 1.0.0", [hex: :poison, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: true]}], "hexpm", "2815d4f6550973d1ed65692d545d079174f6a1f8cb4775f6eb606cbc0666a9de"},
   "tzdata": {:hex, :tzdata, "1.1.1", "20c8043476dfda8504952d00adac41c6eda23912278add38edc140ae0c5bcc46", [:mix], [{:hackney, "~> 1.17", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm", "a69cec8352eafcd2e198dea28a34113b60fdc6cb57eb5ad65c10292a6ba89787"},
   "unicode_util_compat": {:hex, :unicode_util_compat, "0.7.0", "bc84380c9ab48177092f43ac89e4dfa2c6d62b40b8bd132b1059ecc7232f9a78", [:rebar3], [], "hexpm", "25eee6d67df61960cf6a794239566599b09e17e668d3700247bc498638152521"},
diff --git a/test/pillar/bulk_insert_buffer_test.exs b/test/pillar/bulk_insert_buffer_test.exs
index 25f8d8f..7ac9baf 100644
--- a/test/pillar/bulk_insert_buffer_test.exs
+++ b/test/pillar/bulk_insert_buffer_test.exs
@@ -112,7 +112,7 @@ defmodule Pillar.BulkInsertBufferTest do
       %{"major" => major, "minor" => minor} = version(conn)
 
       if (major >= 22 && minor >= 6) or major >= 23 do
-        # Clickhouse of this version doesn't return errors on insert becouse of internal queue
+        # Clickhouse of this version doesn't return errors on insert because of internal queue
         # skip test scenario on this version and newer
         :ok
       else
diff --git a/test/pillar/type_convert/to_clickhouse_json_test.exs b/test/pillar/type_convert/to_clickhouse_json_test.exs
index 373a372..2103523 100644
--- a/test/pillar/type_convert/to_clickhouse_json_test.exs
+++ b/test/pillar/type_convert/to_clickhouse_json_test.exs
@@ -18,14 +18,14 @@ defmodule Pillar.TypeConvert.ToClickhouseJsonTest do
     test "String" do
       assert ToClickhouseJson.convert("Hello") == "Hello"
 
-      assert ToClickhouseJson.convert("Hello, here is single qoute '") ==
-               "Hello, here is single qoute '"
+      assert ToClickhouseJson.convert("Hello, here is single quote '") ==
+               "Hello, here is single quote '"
 
-      assert ToClickhouseJson.convert("Hello, here are two single qoutes ''") ==
-               "Hello, here are two single qoutes ''"
+      assert ToClickhouseJson.convert("Hello, here are two single quotes ''") ==
+               "Hello, here are two single quotes ''"
 
-      assert ToClickhouseJson.convert("Hello, here are two double qoutes \"\"") ==
-               "Hello, here are two double qoutes \"\""
+      assert ToClickhouseJson.convert("Hello, here are two double quotes \"\"") ==
+               "Hello, here are two double quotes \"\""
     end
 
     test "Map" do
diff --git a/test/pillar/type_convert/to_clickhouse_test.exs b/test/pillar/type_convert/to_clickhouse_test.exs
index 2c68087..756a95a 100644
--- a/test/pillar/type_convert/to_clickhouse_test.exs
+++ b/test/pillar/type_convert/to_clickhouse_test.exs
@@ -22,14 +22,14 @@ defmodule Pillar.TypeConvert.ToClickhouseTest do
     test "String" do
       assert ToClickhouse.convert("Hello") == "'Hello'"
 
-      assert ToClickhouse.convert("Hello, here is single qoute '") ==
-               "'Hello, here is single qoute '''"
+      assert ToClickhouse.convert("Hello, here is single quote '") ==
+               "'Hello, here is single quote '''"
 
-      assert ToClickhouse.convert("Hello, here are two single qoutes '' ") ==
-               "'Hello, here are two single qoutes '''' '"
+      assert ToClickhouse.convert("Hello, here are two single quotes '' ") ==
+               "'Hello, here are two single quotes '''' '"
 
-      assert ToClickhouse.convert("Hello, here are two double qoutes \"\" ") ==
-               "'Hello, here are two double qoutes \"\" '"
+      assert ToClickhouse.convert("Hello, here are two double quotes \"\" ") ==
+               "'Hello, here are two double quotes \"\" '"
     end
 
     test "Map" do
diff --git a/test/pillar_test.exs b/test/pillar_test.exs
index 052b04e..0dcdbab 100644
--- a/test/pillar_test.exs
+++ b/test/pillar_test.exs
@@ -460,7 +460,7 @@ defmodule PillarTest do
         assert Pillar.select(conn, sql_array_values) ==
                  {:ok, [%{"test_map" => [bar: ["a", "b"], foo: ["1", "2", "3"]]}]}
       else
-        Logger.warn("Parentheses tests skip, becouse CH major version is lower than 21")
+        Logger.warning("Parentheses tests skip, because CH major version is lower than 21")
       end
     end
   end
@@ -548,7 +548,7 @@ defmodule PillarTest do
   end
 
   describe "#insert_to_table" do
-    test "bad request with unexistable fields", %{conn: conn} do
+    test "bad request with non-existent fields", %{conn: conn} do
       %{"major" => major, "minor" => minor} = version(conn)
 
       table_name = "to_table_inserts_with_fail_expected#{@timestamp}"
@@ -751,7 +751,7 @@ defmodule PillarTest do
                   %{"field4" => [{:baz, "bak"}, {:foo, "bar"}]}
                 ]} = Pillar.select(conn, "select * from #{table_name}")
       else
-        Logger.warn("insert keyword as map, because CH major version is lower than 21")
+        Logger.warning("insert keyword as map, because CH major version is lower than 21")
       end
     end
 
@@ -778,7 +778,7 @@ defmodule PillarTest do
                   %{"field5" => true}
                 ]} = Pillar.select(conn, "select * from #{table_name}")
       else
-        Logger.warn("insert keyword as boolean, because CH major version is lower than 21")
+        Logger.warning("insert keyword as boolean, because CH major version is lower than 21")
       end
     end
   end