diff --git a/opencv-4.1.2.tar.gz b/opencv-4.1.2.tar.gz
deleted file mode 100644
index d61b338..0000000
--- a/opencv-4.1.2.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:385dd0a9c25e67ef0dd60e022d2a2d7b17e2f36819cf3cb46aa8cdff5c5282c9
-size 87468598
diff --git a/opencv-4.2.0.tar.gz b/opencv-4.2.0.tar.gz
new file mode 100644
index 0000000..716241b
--- /dev/null
+++ b/opencv-4.2.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9ccb2192d7e8c03c58fee07051364d94ed7599363f3b0dce1c5e6cc11c1bb0ec
+size 87808712
diff --git a/opencv.changes b/opencv.changes
index b7b1bcd..6fc11e4 100644
--- a/opencv.changes
+++ b/opencv.changes
@@ -1,3 +1,42 @@
+-------------------------------------------------------------------
+Wed Dec 25 01:25:00 UTC 2019 - Stefan Brüns <stefan.bruens@rwth-aachen.de>
+
+- Update to 4.2.0
+  * DNN module:
+    + Integrated GSoC project with CUDA backend: #14827
+    + Intel® Inference Engine backend ( OpenVINO™ ):
+      - support for nGraph OpenVINO API (preview / experimental): #15537
+  * G-API module:
+    + Enabled in-graph inference: #15090. Now G-API can express more
+      complex hybrid CV/DL algorithms;
+      - Intel® Inference Engine backend is the only available now,
+        support for DNN module will be added in the future releases.
+    + Extended execution model with streaming support: #15216. Decoding,
+      image processing, inference, and post-processing are now pipelined
+      efficiently when processing a video stream with G-API.
+    + Added tutorials covering these new features: Face analytics
+      pipeline and a sample Face beautification algorithm.
+  * Performance improvements:
+    + SIMD intrinsics: StereoBM/StereoSGBM algorithms, resize, integral,
+      flip, accumulate with mask, HOG, demosaic, moments
+    + Muti-threading: pyrDown
+  * And many other great patches from OpenCV community:
+    + VideoCapture: video stream extraction (demuxing) through
+      FFmpeg backend.
+    + VideoCapture: waitAny() API for camera input multiplexing
+      (Video4Linux through poll() calls).
+    + (opencv_contrib) new algorithm Rapid Frequency Selective
+      Reconstruction (FSR): #2296 + tutorial.
+    + (opencv_contrib) RIC method for sparse match interpolation: #2367.
+    + (opencv_contrib) LOGOS features matching strategy: #2383.
+  * Breaking changes:
+    + Disabled constructors for legacy C API structures.
+    + Implementation of Thread Local Storage (TLS) has been improved to
+      release data from terminated threads. API has been changed.
+    + Don't define unsafe CV_XADD implementation by default.
+    + Python conversion rules of passed arguments will be updated in
+      next releases: #15915.
+
 -------------------------------------------------------------------
 Sun Nov  3 19:50:04 UTC 2019 - Stefan Brüns <stefan.bruens@rwth-aachen.de>
 
diff --git a/opencv.spec b/opencv.spec
index 428919d..a89af9f 100644
--- a/opencv.spec
+++ b/opencv.spec
@@ -21,7 +21,7 @@
 %endif
 
 %define libname lib%{name}
-%define soname 4_1
+%define soname 4_2
 # disabled by default as many fail
 %bcond_with tests
 %bcond_without gapi
@@ -30,7 +30,7 @@
 %bcond_without python3
 %bcond_without openblas
 Name:           opencv
-Version:        4.1.2
+Version:        4.2.0
 Release:        0
 Summary:        Collection of algorithms for computer vision
 # GPL-2.0 AND Apache-2.0 files are in 3rdparty/ittnotify which is not build
diff --git a/opencv_contrib-4.1.2.tar.gz b/opencv_contrib-4.1.2.tar.gz
deleted file mode 100644
index aa30241..0000000
--- a/opencv_contrib-4.1.2.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:0f6c3d30baa39e3e7611afb481ee86dea45dafb182cac87d570c95dccd83eb8b
-size 60881937
diff --git a/opencv_contrib-4.2.0.tar.gz b/opencv_contrib-4.2.0.tar.gz
new file mode 100644
index 0000000..601fe1b
--- /dev/null
+++ b/opencv_contrib-4.2.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8a6b5661611d89baa59a26eb7ccf4abb3e55d73f99bb52d8f7c32265c8a43020
+size 60482273