diff --git a/CMakeLists.txt b/CMakeLists.txt
index 05af35045..ebb4a615a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,7 @@ include(EthPolicy)
 eth_policy()
 
 # project name and version should be set after cmake_policy CMP0048
-set(PROJECT_VERSION "0.5.4")
+set(PROJECT_VERSION "0.5.5")
 project(solidity VERSION ${PROJECT_VERSION} LANGUAGES CXX)
 
 option(LLL "Build LLL" OFF)
diff --git a/Changelog.md b/Changelog.md
index 8f533ecc0..62536e8bf 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,3 +1,17 @@
+### 0.5.5 (unreleased)
+
+Language Features:
+
+
+Compiler Features:
+
+
+Bugfixes:
+
+
+Build System:
+
+
 ### 0.5.4 (2019-02-12)
 
 Language Features: