diff --git a/CMakeLists.txt b/CMakeLists.txt
index 696f3592cf5f815f916b28a4e1618c75528f74b2..cab348acf39f7fa79042d67a6485159d6b9fd83b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,8 +23,8 @@ project(ProMod3 CXX C)
 include(PROMOD3)
 
 # versioning info
-set(PROMOD3_VERSION_MAJOR 2)
-set(PROMOD3_VERSION_MINOR 1)
+set(PROMOD3_VERSION_MAJOR 3)
+set(PROMOD3_VERSION_MINOR 0)
 set(PROMOD3_VERSION_PATCH 0)
 set(PROMOD3_VERSION_STRING ${PROMOD3_VERSION_MAJOR}.${PROMOD3_VERSION_MINOR})
 set(PROMOD3_VERSION_STRING ${PROMOD3_VERSION_STRING}.${PROMOD3_VERSION_PATCH})
@@ -101,7 +101,7 @@ if(NOT DISABLE_DOCUMENTATION)
   # this URL should always point to the latest version of OST
   set(OST_DOC_URL "https://www.openstructure.org/docs")
 endif()
-find_package(OPENSTRUCTURE 1.11.0 REQUIRED
+find_package(OPENSTRUCTURE 2.0.0 REQUIRED
              COMPONENTS io mol seq seq_alg mol_alg conop img mol_mm)
 
 if(CMAKE_COMPILER_IS_GNUCXX)
diff --git a/container/Dockerfile b/container/Dockerfile
index f32022d62ec1c437023115d1a37c0f06aff7843d..d99552cab31b6a55b14ce0fc3b1ed3fd728a20bc 100644
--- a/container/Dockerfile
+++ b/container/Dockerfile
@@ -2,7 +2,7 @@ FROM registry.scicore.unibas.ch/schwede/openstructure:python3_test2
 
 # ARGUMENTS
 ###########
-ARG OPENSTRUCTURE_VERSION="python3_test2"
+ARG OPENSTRUCTURE_VERSION="2.0.0"
 ARG PROMOD_VERSION="3.0.0"
 ARG SRC_FOLDER="/usr/local/src"
 
diff --git a/doc/conf.py.in b/doc/conf.py.in
index 116d11e729b688038b06a349769f8509fb1af301..8f97db296b46d1a2ca12e70f367b0552bdb81200 100644
--- a/doc/conf.py.in
+++ b/doc/conf.py.in
@@ -286,7 +286,7 @@ rst_epilog = """
 .. |cmake| replace:: CMake
 .. |ost_l| replace:: OpenStructure
 .. |ost_s| replace:: OST
-.. |ost_version| replace:: 1.11.0
+.. |ost_version| replace:: 2.0.0
 .. |python| replace:: Python
 .. |sphinx| replace:: Sphinx
 .. _sphinx: http://sphinx-doc.org/
diff --git a/scripts/bump-version.py b/scripts/bump-version.py
index f33faf9c61bbb9e536e183a313e40b7415443638..c61bd1c945f49a86063c0b60caa4a636d6a0e101 100644
--- a/scripts/bump-version.py
+++ b/scripts/bump-version.py
@@ -1,10 +1,6 @@
 #!/usr/bin/env python
 import sys
 
-raise RuntimeError("Many things have changed in the Python 3 port. " +
-                   "bump-version.py might require updates. " +
-                   "Only remove this error after careful checking!")
-
 if len(sys.argv) < 3:
   print("USAGE: python scripts/bump-version.py PM3_VERSION OST_VERSION")
   print("-> *_VERSION format is MAJOR.MINOR.PATCH (e.g. 1.9.1)")