diff --git a/README.md b/README.md
index b70ca74..24b4a3c 100644
--- a/README.md
+++ b/README.md
@@ -412,79 +412,79 @@ A.
 
 ## History
 
-## 2013/04 (for Ubuntu 13.04)
+## for Ubuntu 13.04
 
 Added: Ruby, Scala, Scheme, bash, Smalltalk, Unlambda, Tcl, Whitespace, Verilog, Vala, Ada, ALGOL 68, Awk, Brainfuck, Boo, C, C++, C#, Cobol, Clojure, Fortran90, FORTRAN77, Forth, Common Lisp, CoffeeScript, Groovy, Go, INTERCAL, Icon, Haskell, Jasmin, Java, LLVM asm, Logo, Lua, Makefile, MSIL, Objective-C, JavaScript, OCaml, Octave, Parrot asm, Pascal, Perl, PHP, Pike, Prolog, Python, R, REXX
 
-## 2014/10 (for Ubuntu 14.10)
+## for Ubuntu 14.10
 
 Added: Scilab, S-Lang, SPL, LOLCODE, Maxima, NASM, Neko, Nickle, Ook!, PARI/GP, Piet, PPT (Punched tape), PostScript, Ratfor
 
-## 2015/04 (for Ubuntu 15.04)
+## for Ubuntu 15.04
 
 Added: Subleq, Standard ML, Thue, Visual Basic, XSLT, Yorick, Zoem, A+, AFNIX, Ante, Asymptote, ATS, BLC8, Befunge, bc, Chef, CDuce, D, dc, eC, Emacs Lisp, Erlang, F#, Falcon, FALSE, Gambas script, GAP, GEL (Genius), Gnuplot, G-Portugol, Gri, Haxe, Julia, Lisaac, Lazy K, Kaya
 
-## 2015/10 (for Ubuntu 15.10)
+## for Ubuntu 15.10
 
 Removed: Boo, Falcon, Kaya
 
 Added: Elixir, Jq, Nim
 
-## 2017/04 (for Ubuntu 17.04)
+## for Ubuntu 17.04
 
 Removed: SPL, Gri, Logo, Parrot asm
 
 Added: Squirrel, Dafny, Grass, MiniZinc
 
-## 2017/10 (for Ubuntu 17.10)
+## for Ubuntu 17.10
 
 Removed: CDuce
 
 Added: Rust
 
-## 2018/04 (for Ubuntu 18.04)
+## for Ubuntu 18.04
 
 Removed: Gambas script, Perl
 
 Added: Shakespeare, sed, tcsh, TypeScript, Velato, Vimscript, Yabasic, zsh, Aheui, AspectC++, AspectJ, BeanShell, CMake, Flex, Fish, GDB, GolfScript, Gzip, Gri, JSFuck, ksh, LiveScript, M4, Mustache, nesC, Parser 3, Perl 5, Perl 6, Promela (Spin), rc
 
-## 2019/04 (for Ubuntu 19.04)
+## for Ubuntu 19.04
 
 Removed: Scilab, G-Portugol, nesC
 
 Added: Curry, Gambas script, GeneratorScriptingLanguage
 
-## 2019/10 (for Ubuntu 19.10)
+## for Ubuntu 19.10
 
 Removed: Gri
 
 Added: Scilab
 
-## 2020/10 (for Ubuntu 20.10)
+## for Ubuntu 20.10
 
 Removed: AspectC++, eC
 
 Added: SurgeScript, Dhall
 
-## 2021/04 (for Ubuntu 21.04)
+## for Ubuntu 21.04
 
 Removed: Curry
 
 Added: G-Portugol
 
-## 2022/04 (for Ubuntu 22.04)
+## for Ubuntu 22.04
 
 Removed: Julia, Nim, Pike
 
 Added: WebAssembly (Text format), WebAssembly (Binary format), Kotlin
 
-## 2023/04 (for Ubuntu 23.04)
+## for Ubuntu 23.04
 
 Removed: Squirrel, GeneratorScriptingLanguage
 
 Added: Crystal, Nim
 
-## 2023/10 (for Ubuntu 23.10)
+## for Ubuntu 23.10
 
 Removed: Smalltalk
 
diff --git a/src/README.md.gen.rb b/src/README.md.gen.rb
index d47ab76..38ae77b 100644
--- a/src/README.md.gen.rb
+++ b/src/README.md.gen.rb
@@ -198,79 +198,79 @@
 
 ## History
 
-## 2013/04 (for Ubuntu 13.04)
+## for Ubuntu 13.04
 
 Added: Ruby, Scala, Scheme, bash, Smalltalk, Unlambda, Tcl, Whitespace, Verilog, Vala, Ada, ALGOL 68, Awk, Brainfuck, Boo, C, C++, C#, Cobol, Clojure, Fortran90, FORTRAN77, Forth, Common Lisp, CoffeeScript, Groovy, Go, INTERCAL, Icon, Haskell, Jasmin, Java, LLVM asm, Logo, Lua, Makefile, MSIL, Objective-C, JavaScript, OCaml, Octave, Parrot asm, Pascal, Perl, PHP, Pike, Prolog, Python, R, REXX
 
-## 2014/10 (for Ubuntu 14.10)
+## for Ubuntu 14.10
 
 Added: Scilab, S-Lang, SPL, LOLCODE, Maxima, NASM, Neko, Nickle, Ook!, PARI/GP, Piet, PPT (Punched tape), PostScript, Ratfor
 
-## 2015/04 (for Ubuntu 15.04)
+## for Ubuntu 15.04
 
 Added: Subleq, Standard ML, Thue, Visual Basic, XSLT, Yorick, Zoem, A+, AFNIX, Ante, Asymptote, ATS, BLC8, Befunge, bc, Chef, CDuce, D, dc, eC, Emacs Lisp, Erlang, F#, Falcon, FALSE, Gambas script, GAP, GEL (Genius), Gnuplot, G-Portugol, Gri, Haxe, Julia, Lisaac, Lazy K, Kaya
 
-## 2015/10 (for Ubuntu 15.10)
+## for Ubuntu 15.10
 
 Removed: Boo, Falcon, Kaya
 
 Added: Elixir, Jq, Nim
 
-## 2017/04 (for Ubuntu 17.04)
+## for Ubuntu 17.04
 
 Removed: SPL, Gri, Logo, Parrot asm
 
 Added: Squirrel, Dafny, Grass, MiniZinc
 
-## 2017/10 (for Ubuntu 17.10)
+## for Ubuntu 17.10
 
 Removed: CDuce
 
 Added: Rust
 
-## 2018/04 (for Ubuntu 18.04)
+## for Ubuntu 18.04
 
 Removed: Gambas script, Perl
 
 Added: Shakespeare, sed, tcsh, TypeScript, Velato, Vimscript, Yabasic, zsh, Aheui, AspectC++, AspectJ, BeanShell, CMake, Flex, Fish, GDB, GolfScript, Gzip, Gri, JSFuck, ksh, LiveScript, M4, Mustache, nesC, Parser 3, Perl 5, Perl 6, Promela (Spin), rc
 
-## 2019/04 (for Ubuntu 19.04)
+## for Ubuntu 19.04
 
 Removed: Scilab, G-Portugol, nesC
 
 Added: Curry, Gambas script, GeneratorScriptingLanguage
 
-## 2019/10 (for Ubuntu 19.10)
+## for Ubuntu 19.10
 
 Removed: Gri
 
 Added: Scilab
 
-## 2020/10 (for Ubuntu 20.10)
+## for Ubuntu 20.10
 
 Removed: AspectC++, eC
 
 Added: SurgeScript, Dhall
 
-## 2021/04 (for Ubuntu 21.04)
+## for Ubuntu 21.04
 
 Removed: Curry
 
 Added: G-Portugol
 
-## 2022/04 (for Ubuntu 22.04)
+## for Ubuntu 22.04
 
 Removed: Julia, Nim, Pike
 
 Added: WebAssembly (Text format), WebAssembly (Binary format), Kotlin
 
-## 2023/04 (for Ubuntu 23.04)
+## for Ubuntu 23.04
 
 Removed: Squirrel, GeneratorScriptingLanguage
 
 Added: Crystal, Nim
 
-## 2023/10 (for Ubuntu 23.10)
+## for Ubuntu 23.10
 
 Removed: Smalltalk