diff --git a/CHANGELOG.md b/CHANGELOG.md
index bc8fb24..938cba3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,26 @@
 # Changelog
 
-## 0.3 - 2020-09-09
+## 0.4.0 - 2020-11-18
+### Added
+- For 2ch.hk check for if a file is a sticker was added;
+- Encoding for `!op.txt` file was explicitly set to `utf-8`;
+- Handling of HTTP errors was added so now program won't crash if file doesn't
+  exist or not accessible for any other reason;
+- To a scraper was added matching of hashes of two files that happen to share
+  same name and size, but hash reported by an imageboard is not the same as of
+  a file. It results in excessive downloading and hash calculations. Hopefully,
+  that only the case for 2ch.hk.
+
+### Changed
+- FileInfo class is now a frozen dataclass for memory efficiency.
+
+### Fixed
+- Found that arguments for match function that matches for `image.ext` pattern
+  were mixed up in places all over the parsers;
+- Also for 2ch.hk checking for if `sub` and `com` was changed to `subject` and
+  `comment`.
+
+## 0.3.0 - 2020-09-09
 ### Added
 - Parser for lolifox.cc.
 
diff --git a/README.md b/README.md
index 6bf362e..edd69d0 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 This is a tool for scraping files from imageboards' threads.
 
-It extracts the files from a JSON version of a thread. And then downloads 'em
-in a specified output directory or if it isn't specified then creates following
-directory hierarchy in a working directory:
+It extracts the files from a JSON representation of a thread. And then downloads
+'em in a specified output directory or if it isn't specified then creates
+following directory hierarchy in a working directory:
 
     <imageboard name>
     |-<board name>
@@ -25,8 +25,8 @@ separately. E.g. `4chan b 1100500`.
 `-o`, `--output-dir` -- output directory where all files will be dumped to.
 
 `--no-op` -- by default OP's post will be saved in a `!op.txt` file. This flag
-disables this behaviour. I desided to put an `!` in a name so this file will be
-on the top in a directory listing.
+disables this behaviour. An exclamation mark `!` in a name is for so this file
+will be on the top of a directory listing.
 
 `-v`, `--version` prints the version of the program, and `-h`, `--help` prints
 help for a program.
@@ -37,4 +37,4 @@ help for a program.
 - [lainchan.org](https://lainchan.org) since 0.1.0
 - [2ch.hk](https://2ch.hk) since 0.1.0
 - [8kun.top](https://8kun.top) since 0.2.2
-- [lolifox.cc](https://lolifox.cc) since 0.3
\ No newline at end of file
+- [lolifox.cc](https://lolifox.cc) since 0.3.0
\ No newline at end of file