diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7e13771..1c59998 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ## (unreleased)
 
-Changes:
+### Changes
 
 * introduces new command-line interface based on `plasp` subcommands:
   * `plasp translate`: translate PDDL and SAS to ASP (replaces former, plain `plasp` calls)
@@ -10,7 +10,7 @@ Changes:
   * `plasp check-syntax`: check the syntax of PDDL specifications
   * `plasp beautify`: cleanly format PDDL specifications
 
-Features:
+### Features
 
 * extended PDDL parser support (`imply`, `exists`, `forall`, `when`, and `=` expressions)
 * new output option `--log-level` to control which status messages should be shown
@@ -18,34 +18,34 @@ Features:
 * adds compatibility mode for parser, which supports more legacy domains
 * new parser option `--parsing-mode` to specify whether to apply strict or compatibility parsing rules
 
-Internal:
+### Internal
 
 * reimplemented PDDL parser from scratch as stand-alone `pddl` library
 
 ## 3.0.3 (2016-09-02)
 
-Bug Fixes:
+### Bug Fixes
 
 * fixes incorrect output format of conditional effects with SAS
 * fixes parsing issue with unexpected whitespaces in SAS files
 
 ## 3.0.2 (2016-08-18)
 
-Features:
+### Features
 
 * unified translation format for SAS and PDDL files
 * documentation of `plasp`’s output format
 * improved output syntax highlighting
 * uses ASP string literals to avoid escaping PDDL identifiers
 
-Bug Fixes:
+### Bug Fixes
 
 * fixes minor formatting issues in SAS translation
 * fixes issue with unsupported expression negations
 
 ## 3.0.1 (2016-06-14)
 
-Features:
+### Features
 
 * basic support for parsing PDDL 3.1 domains and problems
 * limited support for translating PDDL 3.1 domains and problems to ASP facts
@@ -56,13 +56,13 @@ Features:
 * new command-line option `--warning-level` to treat warnings as errors or to ignore warnings
 * new command-line option `--color` to autodetect, enable, or disable color output
 
-Bug Fixes:
+### Bug Fixes
 
 * fixes bug in translation of SAS axiom rules
 
 ## 3.0.0 (2016-05-24)
 
-Features:
+### Features
 
 * parses [SAS](http://www.fast-downward.org/TranslatorOutputFormat) files created with [Fast Downward](http://www.fast-downward.org/)
 * experimental translation from SAS to ASP facts