diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 5f9bc2b36e8823186f9f2df44f2a706239cfbc37..db56f26f6629552e82d8cfe282fa09b1e119a2b2 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,3 +1,9 @@
+Changes in Release 2.6.1
+--------------------------------------------------------------------------------
+
+ * Bugfix in DockQ computation when using ost.mol.scoring
+
+
 Changes in Release 2.6.0
 --------------------------------------------------------------------------------
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index f8dc63080242f57e5c5edf4fa34c9db0a72c4f77..7a659871bf319f7f99ed8ddcbce1d581f191bb9f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,7 +15,7 @@ project(OpenStructure CXX C)
 set (CMAKE_EXPORT_COMPILE_COMMANDS 1)
 set (OST_VERSION_MAJOR 2)
 set (OST_VERSION_MINOR 6)
-set (OST_VERSION_PATCH 0)
+set (OST_VERSION_PATCH 1)
 set (OST_VERSION_STRING ${OST_VERSION_MAJOR}.${OST_VERSION_MINOR}.${OST_VERSION_PATCH} )
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${PROJECT_SOURCE_DIR}/cmake_support)
 include(OST)
diff --git a/docker/Dockerfile b/docker/Dockerfile
index f2924ede64d7ea85e398986b16fd907c3fc596c2..4f7de8f9a7e3f0deb4d9b49d5c4e417b4c289049 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -2,7 +2,7 @@ FROM ubuntu:22.04
 
 # ARGUMENTS
 ###########
-ARG OPENSTRUCTURE_VERSION="2.6.0"
+ARG OPENSTRUCTURE_VERSION="2.6.1"
 ARG SRC_FOLDER="/usr/local/src"
 ARG CPUS_FOR_MAKE=2
 ARG OPENMM_VERSION="7.7.0"
diff --git a/modules/mol/alg/pymod/scoring.py b/modules/mol/alg/pymod/scoring.py
index ec0d77e78f84192ebd3dc0624f9017f68b0ef561..6aaa2276e00e2d7233c2e0e870b3f56ccba1def5 100644
--- a/modules/mol/alg/pymod/scoring.py
+++ b/modules/mol/alg/pymod/scoring.py
@@ -1627,14 +1627,14 @@ class Scorer:
                 trg_ch2 = interface[1]
                 res = dockq.DockQ(self.target, self.target,
                                   trg_ch1, trg_ch2, trg_ch1, trg_ch2)
-                not_covered_counts.apend(res["nnat"])
+                not_covered_counts.append(res["nnat"])
   
         # there are 4 types of combined scores
         # - simple average
         # - average weighted by native_contacts
         # - the two above including nonmapped_contact_interfaces => set DockQ to 0.0
-        scores = np.array([self._dockq_scores])
-        weights = np.array([self._nnat])
+        scores = np.array(self._dockq_scores)
+        weights = np.array(self._nnat)
         if len(scores) > 0:
             self._dockq_ave = np.mean(scores)
         else:
diff --git a/singularity/Singularity b/singularity/Singularity
index 03bcc8c398dfbfe4f926c3fd67f22f331c8e0509..bc04d900abcd31a9e93314ea46f93d34eace5d4a 100644
--- a/singularity/Singularity
+++ b/singularity/Singularity
@@ -1,5 +1,5 @@
 BootStrap: docker
-From: registry.scicore.unibas.ch/schwede/openstructure:2.6.0-jammy
+From: registry.scicore.unibas.ch/schwede/openstructure:2.6.1-jammy
 %post
 ##############################################################################
 # POST