diff --git a/.github/workflows/linux-cuda-gnu.yml b/.github/workflows/linux-cuda-gnu.yml
index 36cf4e93..85ef5726 100644
--- a/.github/workflows/linux-cuda-gnu.yml
+++ b/.github/workflows/linux-cuda-gnu.yml
@@ -79,7 +79,7 @@ jobs:
       DEBIAN_FRONTEND: noninteractive
       # evision related env vars
       MIX_ENV: test
-      OPENCV_VER: "4.7.0"
+      OPENCV_VER: "4.8.0"
       OTP_VERSION: "25.2"
       ELIXIR_VERSION: "1.14.3"
       EVISION_PREFER_PRECOMPILED: "false"
diff --git a/.github/workflows/linux-precompile-cuda-gnu.yml b/.github/workflows/linux-precompile-cuda-gnu.yml
index 7c7acd72..c43627ba 100644
--- a/.github/workflows/linux-precompile-cuda-gnu.yml
+++ b/.github/workflows/linux-precompile-cuda-gnu.yml
@@ -57,7 +57,7 @@ jobs:
       DEBIAN_FRONTEND: noninteractive
       # evision related env vars
       MIX_ENV: test
-      OPENCV_VER: "4.7.0"
+      OPENCV_VER: "4.8.0"
       ELIXIR_VERSION: "1.15.2"
       EVISION_PREFER_PRECOMPILED: "false"
       EVISION_GENERATE_LANG: "erlang,elixir"
diff --git a/.github/workflows/linux-precompile-gnu.yml b/.github/workflows/linux-precompile-gnu.yml
index d93600d5..c79fba5d 100644
--- a/.github/workflows/linux-precompile-gnu.yml
+++ b/.github/workflows/linux-precompile-gnu.yml
@@ -13,7 +13,7 @@ jobs:
   mix_compile:
     runs-on: ubuntu-20.04
     env:
-      OPENCV_VER: "4.7.0"
+      OPENCV_VER: "4.8.0"
       MIX_ENV: prod
       ELIXIR_VERSION: "1.15.2"
       EVISION_PREFER_PRECOMPILED: "false"
diff --git a/.github/workflows/linux-precompile-musl.yml b/.github/workflows/linux-precompile-musl.yml
index 1fc42f39..515de0a1 100644
--- a/.github/workflows/linux-precompile-musl.yml
+++ b/.github/workflows/linux-precompile-musl.yml
@@ -15,7 +15,7 @@ jobs:
     container: alpine:latest
     env:
       MIX_ENV: prod
-      OPENCV_VER: "4.7.0"
+      OPENCV_VER: "4.8.0"
       EVISION_PREFER_PRECOMPILED: "false"
       EVISION_GENERATE_LANG: "erlang,elixir"
     strategy:
@@ -165,7 +165,7 @@ jobs:
   zig_build:
     runs-on: ubuntu-20.04
     env:
-      OPENCV_VER: "4.7.0"
+      OPENCV_VER: "4.8.0"
       MIX_ENV: prod
       ZIG_VERSION: "0.8.0"
       EVISION_PREFER_PRECOMPILED: "false"
diff --git a/.github/workflows/linux-x86_64.yml b/.github/workflows/linux-x86_64.yml
index ffa45702..57939229 100644
--- a/.github/workflows/linux-x86_64.yml
+++ b/.github/workflows/linux-x86_64.yml
@@ -60,7 +60,7 @@ jobs:
     container: alpine:latest
     env:
       MIX_ENV: test
-      OPENCV_VER: "4.7.0"
+      OPENCV_VER: "4.8.0"
       OTP_VERSION: "25.2"
       ELIXIR_VERSION: "1.14.3"
       EVISION_PREFER_PRECOMPILED: "false"
@@ -154,7 +154,7 @@ jobs:
     runs-on: ubuntu-20.04
     env:
       MIX_ENV: test
-      OPENCV_VER: "4.7.0"
+      OPENCV_VER: "4.8.0"
       OTP_VERSION: "25.2"
       ELIXIR_VERSION: "1.14.3"
       EVISION_PREFER_PRECOMPILED: "false"
diff --git a/.github/workflows/macos-precompile.yml b/.github/workflows/macos-precompile.yml
index c0251938..eb3caab4 100644
--- a/.github/workflows/macos-precompile.yml
+++ b/.github/workflows/macos-precompile.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: macos-11
     env:
       MIX_ENV: prod
-      OPENCV_VER: "4.7.0"
+      OPENCV_VER: "4.8.0"
       EVISION_PREFER_PRECOMPILED: "false"
       EVISION_GENERATE_LANG: "erlang,elixir"
     strategy:
diff --git a/.github/workflows/macos-x86_64.yml b/.github/workflows/macos-x86_64.yml
index ca5a00a2..ad64015c 100644
--- a/.github/workflows/macos-x86_64.yml
+++ b/.github/workflows/macos-x86_64.yml
@@ -45,7 +45,7 @@ jobs:
   mix_test:
     runs-on: macos-12
     env:
-      OPENCV_VER: "4.7.0"
+      OPENCV_VER: "4.8.0"
       MIX_ENV: "test"
       EVISION_PREFER_PRECOMPILED: "false"
       FFMPEG_VER: "5"
diff --git a/.github/workflows/nerves-build.yml b/.github/workflows/nerves-build.yml
index 0dcac50c..68483e2e 100644
--- a/.github/workflows/nerves-build.yml
+++ b/.github/workflows/nerves-build.yml
@@ -47,9 +47,8 @@ jobs:
     env:
       MIX_ENV: prod
       NERVES_PROJ_NAME: nerves_evision
-      OPENCV_VER: "4.7.0"
+      OPENCV_VER: "4.8.0"
       NERVES_LIVEBOOK_VER: "v0.10.1"
-      
       ELIXIR_VERSION: "1.15.4"
       EVISION_PREFER_PRECOMPILED: "false"
 
diff --git a/.github/workflows/test-python-compatibility.yml b/.github/workflows/test-python-compatibility.yml
index 92eddf7e..92594ac9 100644
--- a/.github/workflows/test-python-compatibility.yml
+++ b/.github/workflows/test-python-compatibility.yml
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-20.04
     env:
       MIX_ENV: test
-      OPENCV_VER: "4.7.0"
+      OPENCV_VER: "4.8.0"
       EVISION_PREFER_PRECOMPILED: "false"
 
     strategy:
diff --git a/.github/workflows/windows-precompile-cuda.yml b/.github/workflows/windows-precompile-cuda.yml
index 9b078e4f..8935c64d 100644
--- a/.github/workflows/windows-precompile-cuda.yml
+++ b/.github/workflows/windows-precompile-cuda.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: windows-2019
     env:
       MIX_ENV: prod
-      OPENCV_VER: "4.7.0"
+      OPENCV_VER: "4.8.0"
       ELIXIR_VERSION: "1.14.3"
       EVISION_PREFER_PRECOMPILED: "false"
       EVISION_GENERATE_LANG: "erlang,elixir"
diff --git a/.github/workflows/windows-precompile.yml b/.github/workflows/windows-precompile.yml
index 7c282d0b..798b1839 100644
--- a/.github/workflows/windows-precompile.yml
+++ b/.github/workflows/windows-precompile.yml
@@ -14,8 +14,8 @@ jobs:
     runs-on: windows-latest
     env:
       MIX_ENV: prod
-      OPENCV_VER: "4.7.0"
-      ELIXIR_VERSION: "1.15.2"
+      OPENCV_VER: "4.8.0"
+      ELIXIR_VERSION: "1.15.4"
       EVISION_PREFER_PRECOMPILED: "false"
       EVISION_GENERATE_LANG: "erlang,elixir"
       MAKE: "nmake"
diff --git a/.github/workflows/windows-x86_64.yml b/.github/workflows/windows-x86_64.yml
index d8e59335..a894d635 100644
--- a/.github/workflows/windows-x86_64.yml
+++ b/.github/workflows/windows-x86_64.yml
@@ -47,7 +47,7 @@ jobs:
     runs-on: windows-latest
     env:
       MIX_ENV: test
-      OPENCV_VER: "4.7.0"
+      OPENCV_VER: "4.8.0"
       OTP_VERSION: "25.2"
       ELIXIR_VERSION: "1.14.3"
       EVISION_PREFER_PRECOMPILED: "false"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b0855c2c..454b9548 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## v0.1.32 (2023-07-31)
+[Browse the Repository](https://github.com/cocoa-xu/evision/tree/v0.1.32) | [Released Assets](https://github.com/cocoa-xu/evision/releases/tag/v0.1.32)
+
+### Changed
+- Updated to OpenCV 4.8.0. Some APIs have changed, please see OpenCV's release note for more information.
+
 ## v0.1.31 (2023-04-17)
 [Browse the Repository](https://github.com/cocoa-xu/evision/tree/v0.1.31) | [Released Assets](https://github.com/cocoa-xu/evision/releases/tag/v0.1.31)
 
diff --git a/Makefile b/Makefile
index a8ecd0bd..1e69d514 100644
--- a/Makefile
+++ b/Makefile
@@ -17,13 +17,13 @@ CMAKE_BUILD_TYPE ?= Release
 # OpenCV
 OPENCV_USE_GIT_HEAD ?= false
 OPENCV_GIT_REPO ?= "https://github.com/opencv/opencv.git"
-OPENCV_VER ?= 4.7.0
+OPENCV_VER ?= 4.8.0
 ifneq ($(OPENCV_USE_GIT_HEAD), false)
 	OPENCV_VER=$(OPENCV_USE_GIT_BRANCH)
 endif
 OPENCV_CONTRIB_USE_GIT_HEAD ?= false
 OPENCV_GIT_REPO ?= "https://github.com/opencv/opencv_contrib.git"
-OPENCV_CONTRIB_VER ?= 4.7.0
+OPENCV_CONTRIB_VER ?= 4.8.0
 ifneq ($(OPENCV_CONTRIB_USE_GIT_HEAD), false)
 	OPENCV_CONTRIB_VER=$(OPENCV_CONTRIB_USE_GIT_BRANCH)
 endif
diff --git a/Makefile.win b/Makefile.win
index c308ebac..ec8db965 100644
--- a/Makefile.win
+++ b/Makefile.win
@@ -21,10 +21,10 @@ OPENCV_USE_GIT_HEAD=false
 OPENCV_GIT_REPO="https://github.com/opencv/opencv.git"
 !ENDIF
 !IFNDEF OPENCV_VER
-OPENCV_VER=4.7.0
+OPENCV_VER=4.8.0
 !ENDIF
 !IFNDEF OPENCV_CONTRIB_VER
-OPENCV_CONTRIB_VER=4.7.0
+OPENCV_CONTRIB_VER=4.8.0
 !ENDIF
 !IF "$(OPENCV_USE_GIT_HEAD)" == "true"
 OPENCV_VER=$(OPENCV_USE_GIT_BRANCH)
diff --git a/README.md b/README.md
index f5b69c65..62f4b303 100644
--- a/README.md
+++ b/README.md
@@ -149,7 +149,7 @@ iex> mat = Evision.Mat.from_nx(t)
 
 #### Unsupported Type Map
 
-As OpenCV does not support the following types (yet, as of OpenCV 4.7.0)
+As OpenCV does not support the following types (yet, as of OpenCV 4.8.0)
 
 - `{:s, 64}`
 - `{:u, 32}`
@@ -319,6 +319,7 @@ Compatible OpenCV versions:
 - 4.5.5
 - 4.6.0
 - 4.7.0
+- 4.8.0
 
 by compatible, it means these versions can compile successfully, and I tested a small range of functions. Tons of tests
 should be written, and then we can have a list for tested OpenCV versions.
@@ -518,7 +519,7 @@ To obtain and compile OpenCV's source code from official releases, the following
 # optional
 ## set OpenCV version
 ##   the corresponding license file should be available at https://github.com/opencv/opencv/blob/${OPENCV_VER}/LICENSE
-export OPENCV_VER="4.7.0"
+export OPENCV_VER="4.8.0"
 
 # optional
 ## Use Debug build
@@ -704,7 +705,7 @@ Say you have the following MIX environment variables:
 # set by MIX
 MIX_ENV=dev
 # set by evision or you
-OPENCV_VER=4.7.0
+OPENCV_VER=4.8.0
 # set by yourself if you're compiling evision to a nerves firmware
 MIX_TARGET=rpi4
 ```
diff --git a/mix.exs b/mix.exs
index f7f280a0..28fccb9e 100644
--- a/mix.exs
+++ b/mix.exs
@@ -2,11 +2,11 @@ defmodule Evision.MixProject.Metadata do
   @moduledoc false
 
   def app, do: :evision
-  def version, do: "0.1.31"
+  def version, do: "0.1.32"
   def github_url, do: "https://github.com/cocoa-xu/evision"
-  def opencv_version, do: "4.7.0"
+  def opencv_version, do: "4.8.0"
   # only means compatible. need to write more tests
-  def compatible_opencv_versions, do: ["4.5.3", "4.5.4", "4.5.5", "4.6.0", "4.7.0"]
+  def compatible_opencv_versions, do: ["4.5.3", "4.5.4", "4.5.5", "4.6.0", "4.7.0", "4.8.0"]
   def default_cuda_version, do: "118"
   def all_cuda_version, do: ["111", "114", "118"]
 end
diff --git a/patches/apply_patch.py b/patches/apply_patch.py
index 220f0889..a0a78a35 100644
--- a/patches/apply_patch.py
+++ b/patches/apply_patch.py
@@ -10,7 +10,7 @@
 
 
 def patch_fix_getLayerShapes(opencv_version: str, opencv_src_root: str):
-    if opencv_version not in ['4.5.4', '4.5.5', '4.6.0', '4.7.0']:
+    if opencv_version not in ['4.5.4', '4.5.5', '4.6.0', '4.7.0', '4.8.0']:
         print(f"warning: applying `patch_fix_getLayerShapes` to opencv version `{opencv_version}`")
 
     # modules/dnn/include/opencv2/dnn/dnn.hpp
diff --git a/py_src/class_info.py b/py_src/class_info.py
index 4370daa4..062310a4 100644
--- a/py_src/class_info.py
+++ b/py_src/class_info.py
@@ -114,14 +114,16 @@ def gen_erl_func_list(self, codegen):
         while base_class is not None:
             if base_class \
                 and (
-                        current_class.cname.startswith("cv::ml") 
+                        base_class == "GraphicalCodeDetector"
+                        or current_class.cname.startswith("cv::ml") 
+                        or "Calibrate" in current_class.cname 
                         or "Calibrate" in current_class.cname 
                         or (current_class.base is not None and "Feature2D" in current_class.base) 
                         or (current_class.base is not None and "Matcher" in current_class.base)
                         or (current_class.base is not None and "Algorithm" in current_class.base)
                         or (current_class.base is not None and current_class.cname.startswith("cv::dnn"))
                     ):
-                if base_class in codegen.classes:
+                if base_class in codegen.classes and current_class.base is not None:
                     base_class = codegen.classes[current_class.base]
                     for base_method_name in base_class.methods:
                         if base_method_name not in methods:
@@ -240,14 +242,15 @@ def gen_code(self, codegen):
         while base_class is not None:
             if base_class \
                 and (
-                        current_class.cname.startswith("cv::ml") 
+                        base_class == "GraphicalCodeDetector"
+                        or current_class.cname.startswith("cv::ml") 
                         or "Calibrate" in current_class.cname 
                         or (current_class.base is not None and "Feature2D" in current_class.base) 
                         or (current_class.base is not None and "Matcher" in current_class.base)
                         or (current_class.base is not None and "Algorithm" in current_class.base)
                         or (current_class.base is not None and current_class.cname.startswith("cv::dnn"))
                     ):
-                if base_class in codegen.classes:
+                if base_class in codegen.classes and current_class.base is not None:
                     base_class = codegen.classes[current_class.base]
                     for base_method_name in base_class.methods:
                         if base_method_name not in methods:
diff --git a/py_src/func_info.py b/py_src/func_info.py
index ba40b813..8e82e8c9 100644
--- a/py_src/func_info.py
+++ b/py_src/func_info.py
@@ -329,6 +329,10 @@ def gen_code(self, codegen):
                 if defval and len(defval) > 0:
                     if arg_type_info.atype == "QRCodeEncoder_Params":
                         code_decl += "    QRCodeEncoder::Params %s=%s;\n" % (a.name, defval)
+                    elif arg_type_info.atype == "QRCodeDetectorAruco_Params":
+                        code_decl += "    QRCodeDetectorAruco::Params %s=%s;\n" % (a.name, defval)
+                    elif arg_type_info.atype == "aruco_DetectorParameters":
+                        code_decl += "    aruco::DetectorParameters %s=%s;\n" % (a.name, defval)
                     else:
                         if arg_type_info.atype == "FileStorage" or (underscore_type in all_classes and all_classes[underscore_type].issimple is False):
                             code_decl += "    Ptr<%s> ptr_%s;\n" % (arg_type_info.atype, a.name,)
@@ -342,6 +346,10 @@ def gen_code(self, codegen):
                         if arg_type_info.atype == "FileStorage" or (underscore_type in all_classes and all_classes[underscore_type].issimple is False):
                             code_decl += "    Ptr<%s> ptr_%s;\n" % (arg_type_info.atype, a.name)
                             code_from_ptr += "    %s %s; if (ptr_%s.get()) { %s = *ptr_%s.get(); }\n    " % (arg_type_info.atype, a.name, a.name, a.name, a.name)
+                        elif arg_type_info.atype == "QRCodeDetectorAruco_Params":
+                            code_decl += "    QRCodeDetectorAruco::Params %s;\n" % (a.name,)
+                        elif arg_type_info.atype == "aruco_DetectorParameters":
+                            code_decl += "    aruco::DetectorParameters %s;\n" % (a.name,)
                         else:
                             code_decl += "    %s %s;\n" % (arg_type_info.atype, a.name)
 
diff --git a/py_src/hdr_parser.py b/py_src/hdr_parser.py
index 3f26a41b..710c7921 100755
--- a/py_src/hdr_parser.py
+++ b/py_src/hdr_parser.py
@@ -259,6 +259,10 @@ def parse_class_decl(self, decl_str):
         if "CV_EXPORTS_W_SIMPLE" in l:
             l = l.replace("CV_EXPORTS_W_SIMPLE", "")
             modlist.append("/Simple")
+        if "CV_EXPORTS_W_PARAMS" in l:
+            l = l.replace("CV_EXPORTS_W_PARAMS", "")
+            modlist.append("/Map")
+            modlist.append("/Params")
         npos = l.find("CV_EXPORTS_AS")
         if npos < 0:
             npos = l.find('CV_WRAP_AS')
@@ -393,6 +397,7 @@ def parse_func_decl(self, decl_str, mat="Mat", docstring=""):
             [~]<function_name>
             (<arg_type1> <arg_name1>[=<default_value1>] [, <arg_type2> <arg_name2>[=<default_value2>] ...])
             [const] {; | <function_body>}
+
         Returns the function declaration entry:
         [<func name>, <return value C-type>, <list of modifiers>, <list of arguments>, <original return type>, <docstring>] (see above)
         """
@@ -611,6 +616,8 @@ def parse_func_decl(self, decl_str, mat="Mat", docstring=""):
                                                              ("InputOutputArray", mat),
                                                              ("OutputArray", mat),
                                                              ("noArray", arg_type)]).strip()
+                    if '/IO' in modlist and '/O' in modlist:
+                        modlist.remove('/O')
                     args.append([arg_type, arg_name, defval, modlist])
                 npos = arg_start-1
 
@@ -628,12 +635,14 @@ def parse_func_decl(self, decl_str, mat="Mat", docstring=""):
     def get_dotted_name(self, name):
         """
         adds the dot-separated container class/namespace names to the bare function/class name, e.g. when we have
+
         namespace cv {
         class A {
         public:
             f(int);
         };
         }
+
         the function will convert "A" to "cv.A" and "f" to "cv.A.f".
         """
         if not self.block_stack:
@@ -661,6 +670,7 @@ class A {
     def parse_stmt(self, stmt, end_token, mat="Mat", docstring=""):
         """
         parses the statement (ending with ';' or '}') or a block head (ending with '{')
+
         The function calls parse_class_decl or parse_func_decl when necessary. It returns
         <block_type>, <block_name>, <parse_flag>, <declaration>
         where the first 3 values only make sense for blocks (i.e. code blocks, namespaces, classes, enums and such)
@@ -772,7 +782,15 @@ def parse_stmt(self, stmt, end_token, mat="Mat", docstring=""):
                 var_list = [var_name1] + [i.strip() for i in var_list[1:]]
 
                 for v in var_list:
-                    class_decl[3].append([var_type, v, "", var_modlist])
+                    prop_definition = v.split('=')
+                    prop_name = prop_definition[0].strip()
+                    if len(prop_definition) == 1:
+                        # default value is not provided
+                        prop_default_value = ''
+                    else:
+                        prop_default_value = prop_definition[-1]
+                    class_decl[3].append([var_type, prop_name, prop_default_value,
+                                          var_modlist])
             return stmt_type, "", False, None
 
         # something unknown
diff --git a/py_src/helper.py b/py_src/helper.py
index fd3fd927..10ae07ba 100644
--- a/py_src/helper.py
+++ b/py_src/helper.py
@@ -638,6 +638,7 @@ def is_struct(argtype: str, also_get: Optional[str] = None, classname: Optional[
         'MergeMertens': 'Evision.MergeMertens',
         'MergeRobertson': 'Evision.MergeRobertson',
         'ORB': 'Evision.ORB',
+        'RotatedRect': 'Evision.RotatedRect',
         'PyRotationWarper': 'Evision.PyRotationWarper',
         'QRCodeDetector': 'Evision.QRCodeDetector',
         'QRCodeEncoder': 'Evision.QRCodeEncoder',
@@ -832,6 +833,8 @@ def is_struct(argtype: str, also_get: Optional[str] = None, classname: Optional[
         "TrackerNano_Params": "Evision.TrackerNano.Params",
 
         "ArucoDetector": "Evision.ArUco.ArucoDetector",
+        "QRCodeDetectorAruco": "Evision.QRCodeDetectorAruco",
+        "GraphicalCodeDetector": "Evision.GraphicalCodeDetector",
 
         "mcc_CChecker": "Evision.MCC.CCheckerDetector",
         "dnn_Net": "Evision.DNN.Net",
@@ -1199,6 +1202,14 @@ def map_argtype_in_spec_erlang(classname: str, argtype: str, is_in: bool, decl:
         return '#evision_ocl_device{}'
     elif argtype == 'Index' and classname == 'flann_Index':
          return '#evision_flann_index{}'
+    elif argtype == 'QRCodeDetectorAruco':
+        return '#evision_qrcode_detector_aruco{}'
+    elif argtype == 'QRCodeDetectorAruco_Params':
+        return 'term()'
+    elif argtype in ['aruco_DetectorParameters', 'aruco::DetectorParameters']:
+        return 'term()'
+    elif argtype == 'PolishingMethod' and classname == 'UsacParams':
+        return 'integer()'
     else:
         if argtype == 'LayerId':
             return 'term()'
@@ -1291,6 +1302,14 @@ def map_argtype_in_spec_elixir(classname: str, argtype: str, is_in: bool, decl:
         return 'Evision.OCL.Device.t()'
     elif argtype == 'Index' and classname == 'flann_Index':
          return 'Evision.Flann.Index.t()'
+    elif argtype == 'QRCodeDetectorAruco':
+        return 'Evision.QRCodeDetectorAruco'
+    elif argtype in ['QRCodeDetectorAruco_Params', 'QRCodeDetectorAruco::Params']:
+        return 'Evision.QRCodeDetectorAruco.Params'
+    elif argtype in ['aruco_DetectorParameters', 'aruco::DetectorParameters']:
+        return 'Evision.Aruco.DetectorParameters'
+    elif argtype == 'PolishingMethod' and classname == 'UsacParams':
+        return 'integer()'
     else:
         if argtype == 'LayerId':
             return 'term()'
@@ -1427,7 +1446,8 @@ def map_uppercase_to_erlang_name(name):
         "GScalar": "gScalar",
         "GStreamingCompiled": "gStreamingCompiled",
 
-        "EMDHistogramCostExtractor": "emdHistogramCostExtractor"
+        "EMDHistogramCostExtractor": "emdHistogramCostExtractor",
+        "QRCodeDetectorAruco": "qrCodeDetectorAruco"
     }
     if name[0:3] == 'cv_':
         name = name[3:]
diff --git a/src/evision.app.src b/src/evision.app.src
index 85ce0b88..11c83ca4 100644
--- a/src/evision.app.src
+++ b/src/evision.app.src
@@ -1,6 +1,6 @@
 {application, evision,
  [{description, "OpenCV-Erlang/Elixir binding."},
-  {vsn, "0.1.31"},
+  {vsn, "0.1.32"},
   {registered, []},
   {applications,
    [kernel,
diff --git a/test/dnn_text_detection_model_db_test.exs b/test/dnn_text_detection_model_db_test.exs
index 731503c7..49f5ce8e 100644
--- a/test/dnn_text_detection_model_db_test.exs
+++ b/test/dnn_text_detection_model_db_test.exs
@@ -35,6 +35,5 @@ defmodule Evision.DNN.TextDetectionModelDB.Test do
 
     assert vertices == [[{2, 19}, {2, 8}, {27, 5}, {27, 17}]]
     assert Enum.count(confidences) > 0
-    assert Enum.all?(confidences, fn x -> x == 1.0 end)
   end
 end
diff --git a/test/videocapture_test.exs b/test/videocapture_test.exs
index 6cde1679..8d49fbf3 100644
--- a/test/videocapture_test.exs
+++ b/test/videocapture_test.exs
@@ -11,14 +11,17 @@ defmodule Evision.VideoCapture.Test do
 
     %Evision.VideoCapture{
       isOpened: true,
-      fps: 43.2,
+      fps: 60.0,
       frame_count: 18.0,
       frame_height: 1080.0,
       frame_width: 1920.0
     } = video
 
     fourcc = Evision.VideoCapture.get(video, Evision.Constant.cv_CAP_PROP_FOURCC())
-    assert 828_601_960.0 == fourcc
+
+    # "\x63\x76\x65\x68"
+    # "cveh" => "hevc"
+    assert 1668703592.0 == fourcc
 
     %Evision.Mat{shape: {1080, 1920, 3}} = Evision.VideoCapture.read(video)