diff --git a/.travis.yml b/.travis.yml
index 39a6205..b909635 100755
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,12 +9,12 @@ services:
 
 env:
   matrix:
-      - TYPE=pmemkv-master OS=ubuntu OS_VER=19.10 PUSH_IMAGE=1
-      - TYPE=pmemkv-stable-1.0 OS=ubuntu OS_VER=19.10
-      - TYPE=pmemkv-stable-1.1 OS=ubuntu OS_VER=19.10
-      - TYPE=pmemkv-master OS=fedora OS_VER=31 PUSH_IMAGE=1
-      - TYPE=pmemkv-stable-1.0 OS=fedora OS_VER=31
-      - TYPE=pmemkv-stable-1.1 OS=fedora OS_VER=31
+      - TYPE=pmemkv-master OS=ubuntu OS_VER=20.04 PUSH_IMAGE=1
+      - TYPE=pmemkv-stable-1.0 OS=ubuntu OS_VER=20.04
+      - TYPE=pmemkv-stable-1.1 OS=ubuntu OS_VER=20.04
+      - TYPE=pmemkv-master OS=fedora OS_VER=33 PUSH_IMAGE=1
+      - TYPE=pmemkv-stable-1.0 OS=fedora OS_VER=33
+      - TYPE=pmemkv-stable-1.1 OS=fedora OS_VER=33
 
 before_install:
   - echo $TRAVIS_COMMIT_RANGE
diff --git a/examples/interactive_example.py b/examples/interactive_example.py
new file mode 100644
index 0000000..2b8439e
--- /dev/null
+++ b/examples/interactive_example.py
@@ -0,0 +1,75 @@
+#  Copyright 2021, Intel Corporation
+#
+#  Redistribution and use in source and binary forms, with or without
+#  modification, are permitted provided that the following conditions
+#  are met:
+#
+#      * Redistributions of source code must retain the above copyright
+#        notice, this list of conditions and the following disclaimer.
+#
+#      * Redistributions in binary form must reproduce the above copyright
+#        notice, this list of conditions and the following disclaimer in
+#        the documentation and/or other materials provided with the
+#        distribution.
+#
+#      * Neither the name of the copyright holder nor the names of its
+#        contributors may be used to endorse or promote products derived
+#        from this software without specific prior written permission.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+#  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+#  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+#  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Usage:
+# insert element: 'interactive_example.py --path path_to_db --insert key value'
+# lookup element: 'interactive_example.py --path path_to_db --lookup key'
+# print all elements: 'interactive_example.py --path path_to_db --iterate'
+
+import pmemkv
+import argparse
+
+def callback_kv(key, value):
+    print("key: ", memoryview(key).tobytes().decode(), " value: ", memoryview(value).tobytes().decode())
+
+def callback_v(value):
+    print(memoryview(value).tobytes().decode())
+
+parser = argparse.ArgumentParser()
+parser.add_argument('--path', help='Path to the database')
+
+group = parser.add_mutually_exclusive_group(required=True)
+group.add_argument('--lookup', nargs=1, metavar=('key'),
+    help='Print element with specified key')
+group.add_argument('--insert', nargs=2, metavar=('key', 'value'),
+    help='Insert element with specified key and value')
+group.add_argument('--iterate', action='store_true',
+    help='Print all elements')
+
+args = parser.parse_args()
+
+print("Configuring engine")
+config = {}
+config["path"] = args.path
+config["size"] = 10485760
+config["create_if_missing"] = 1
+
+print(f"Starting engine with config: {config}")
+db = pmemkv.Database("cmap", config)
+
+if args.lookup:
+    db.get(args.lookup[0], callback_v)
+elif args.insert:
+    db.put(args.insert[0], args.insert[1])
+elif args.iterate:
+    db.get_all(callback_kv)
+
+print("Stopping engine")
+db.stop()
diff --git a/utils/docker/images/Dockerfile.fedora-31 b/utils/docker/images/Dockerfile.fedora-33
similarity index 97%
rename from utils/docker/images/Dockerfile.fedora-31
rename to utils/docker/images/Dockerfile.fedora-33
index 38f7cb9..b93265b 100755
--- a/utils/docker/images/Dockerfile.fedora-31
+++ b/utils/docker/images/Dockerfile.fedora-33
@@ -1,5 +1,5 @@
 #
-# Copyright 2016-2020, Intel Corporation
+# Copyright 2016-2021, Intel Corporation
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -35,12 +35,12 @@
 #
 
 # Pull base image
-FROM fedora:31
+FROM fedora:33
 MAINTAINER szymon.romik@intel.com
 
 # Set required environment variables
 ENV OS fedora
-ENV OS_VER 31
+ENV OS_VER 33
 ENV PACKAGE_MANAGER rpm
 ENV NOTTY 1
 
@@ -74,6 +74,7 @@ RUN dnf update -y \
 	wget \
 	which \
 	python3-pip \
+	libatomic \
 && dnf clean all
 
 RUN pip3 install pytest setuptools wheel
diff --git a/utils/docker/images/Dockerfile.ubuntu-19.10 b/utils/docker/images/Dockerfile.ubuntu-20.04
similarity index 98%
rename from utils/docker/images/Dockerfile.ubuntu-19.10
rename to utils/docker/images/Dockerfile.ubuntu-20.04
index e306f5e..7fbabb2 100755
--- a/utils/docker/images/Dockerfile.ubuntu-19.10
+++ b/utils/docker/images/Dockerfile.ubuntu-20.04
@@ -35,12 +35,12 @@
 #
 
 # Pull base image
-FROM ubuntu:19.10
+FROM ubuntu:20.04
 MAINTAINER szymon.romik@intel.com
 
 # Set required environment variables
 ENV OS ubuntu
-ENV OS_VER 19.10
+ENV OS_VER 20.04
 ENV PACKAGE_MANAGER deb
 ENV NOTTY 1
 
diff --git a/utils/docker/images/install-libpmemobj-cpp.sh b/utils/docker/images/install-libpmemobj-cpp.sh
index c91f997..89cc712 100755
--- a/utils/docker/images/install-libpmemobj-cpp.sh
+++ b/utils/docker/images/install-libpmemobj-cpp.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# Copyright 2019, Intel Corporation
+# Copyright 2019-2021, Intel Corporation
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -40,8 +40,8 @@ set -e
 PREFIX=/usr
 PACKAGE_TYPE=$1
 
-# master: Merge pull request #652 from ldorau/Create-separate-Docker-images-for-v1.10-branch
-LIBPMEMOBJ_CPP_VERSION="006137044243981f4760ae220101a43cf97bcf2d"
+# master: Merge pull request #1062 from igchor/fix_parallel_xexec
+LIBPMEMOBJ_CPP_VERSION='485353b9c2fdbaf57607dcd83551664cbc3cd963'
 
 git clone https://github.com/pmem/libpmemobj-cpp --shallow-since=2019-10-02
 cd libpmemobj-cpp
@@ -50,7 +50,7 @@ git checkout $LIBPMEMOBJ_CPP_VERSION
 mkdir build
 cd build
 
-cmake .. -DCPACK_GENERATOR="$PACKAGE_TYPE" -DCMAKE_INSTALL_PREFIX=$PREFIX
+cmake .. -DCPACK_GENERATOR="$PACKAGE_TYPE" -DCMAKE_INSTALL_PREFIX=$PREFIX -DTESTS_USE_VALGRIND=0
 
 if [ "$PACKAGE_TYPE" = "" ]; then
 	make -j$(nproc) install
diff --git a/utils/docker/images/install-pmdk.sh b/utils/docker/images/install-pmdk.sh
index af551bc..dbe2ec9 100755
--- a/utils/docker/images/install-pmdk.sh
+++ b/utils/docker/images/install-pmdk.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# Copyright 2019, Intel Corporation
+# Copyright 2019-2021, Intel Corporation
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -39,8 +39,8 @@ set -e
 PREFIX=/usr
 PACKAGE_TYPE=$1
 
-# stable-1.8: common: fix build on GitHub Actions
-PMDK_VERSION="eeb8fd86c6c72f4607a22a1e9d9f7da31be8af2a"
+# 1.10
+PMDK_VERSION="b661e50ac7b2a6c6b153f1a52309a0e4149eb2a2"
 
 git clone https://github.com/pmem/pmdk --shallow-since=2019-09-26
 cd pmdk
diff --git a/utils/docker/images/prepare-pmemkv.sh b/utils/docker/images/prepare-pmemkv.sh
index c1bf8c9..e96ba51 100755
--- a/utils/docker/images/prepare-pmemkv.sh
+++ b/utils/docker/images/prepare-pmemkv.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# Copyright 2019, Intel Corporation
+# Copyright 2019-2021, Intel Corporation
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -39,8 +39,8 @@ set -e
 PREFIX=/usr
 PACKAGE_TYPE=$1
 
-# master: Merge pull request #602 from ldorau/Fix-setting-compilers--do-not-mix-gcc-with-clang
-current_pmemkv_version="5aff9f197e2e3eaae7f419c04ab9e2fc98309eed"
+# master: Merge pull request #985 from JanDorniak99/add_test_case_with_zero_filled_string
+current_pmemkv_version="e57429f4640278b7eead80f89832ba1136356c81"
 # stable-1.0: Merge pull request #528 from ldorau/Do-not-add-pmemkv_config...; 14.11.2019
 stable_1_pmemkv_version="a3735b5393f0d5411ef8a2468b36d2a1ed00c0a1"
 # stable-1.1: Version 1.1