diff --git a/README.md b/README.md
index 9c30549..4cb6909 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,3 @@ Tests must be run before each commit.
 1. open repo folder with Visua Studio Code
 2. click `Terminal` -> `Run Task...`
 3. select `npm: test jest`
-
----
-
-Release notes before 2.7: [test](ReleaseNotes_before27.md)
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diff --git a/ReleaseNotes_before27.md b/ReleaseNotes_before27.md
deleted file mode 100644
index dedd076..0000000
--- a/ReleaseNotes_before27.md
+++ /dev/null
@@ -1,67 +0,0 @@
-# Release Notes
-
-### 2.6 [2020-02-23]
-
-- support VHDL-2008 block comment /* */
-- use jest
-- indent multi-line signal and constant declarations
-- do not add space between "<" or ">"; e.g. "<<<" will become " <<< " and not " < < < "
-- array type definition breaks when formatting; e.g. "RANGE <>" becomes "RANGE < >"
-
-### 2.5 [2019-03-13]
-
-- keep the front page concise
-- add `style.css`, improve UI
-- support all browsers (do not use `RegExp Lookbehind Assertions`)
-
-### 2.4 [2019-02-23]
-
-- use local storage to store settings
-- add `main.js`
-- treat key words and type names separately
-- expand/hide setting options
-- align signs locally or globally
-
-### 2.3 [2019-02-22]
-
-- bugfix "remove non-comment code by mistake"
-- add `tests` folder, improve the project management
-- support extended identifier (backslash names)
-- fix exponential notation
-- user can choose EOL symbols (or use system's by default)
-- align comments (when user chooses "align" option)
-- bugfix "extra whitespaces around unary minus or plus"
-
-Many thanks to [@MihaiBabiac](https://github.com/MihaiBabiac)
-
-### 2.2 [2018-10-16]
-
-- support enumerated types
-
-### 2.1 [2018-03-22]
-
-- fix keywords case issues
-- anything in quotes will not be touched
-- correct format for comments after multi-line statement
-- options to align signs in parameter lists
-- fix function indentation
-- fix "align symbols affects process label"
-- do not align multi-occurrence symbols in a line
-- better styles (checkbox, button, disabled)
-- support package bodies
-- fix "newline after PORT affects PORT MAP"
-
-### 2.0 [2018-02-16]
-
-- rewrite the main algorithm (& move to a new repository)
-- add more unit tests
-- fix all known issues
-
-### 1.1 [2016-11]
-
-- fix some bugs reported by users
-- add unit tests
-
-### 1.0 [2015-01]
-
-- support most of the VHDL features
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