diff --git a/cmssw-tool-conf.spec b/cmssw-tool-conf.spec
index df82914d3af..f411c06216d 100644
--- a/cmssw-tool-conf.spec
+++ b/cmssw-tool-conf.spec
@@ -87,6 +87,7 @@ Requires: valgrind-toolfile
 Requires: cmsswdata-toolfile
 Requires: zstd-toolfile
 Requires: hls-toolfile
+Requires: opencv-toolfile
 Requires: grpc-toolfile
 Requires: onnxruntime-toolfile
 
diff --git a/opencv-toolfile.spec b/opencv-toolfile.spec
new file mode 100644
index 00000000000..367c8fe96ab
--- /dev/null
+++ b/opencv-toolfile.spec
@@ -0,0 +1,27 @@
+### RPM external opencv-toolfile 1.0
+Requires: opencv
+%prep
+
+%build
+
+%install
+
+mkdir -p %i/etc/scram.d
+cat << \EOF_TOOLFILE >%i/etc/scram.d/opencv.xml
+<tool name="opencv" version="@TOOL_VERSION@">
+  <lib name="opencv_core"/>
+  <client>
+    <environment name="OPENCV_BASE" default="@TOOL_ROOT@"/>
+    <environment name="INCLUDE" default="$OPENCV_BASE/include"/>
+    <environment name="LIBDIR" default="$OPENCV_BASE/lib"/>
+    <environment name="BINDIR" default="$OPENCV_BASE/bin"/>
+  </client>
+  <use name="libpng"/>
+  <use name="libjpeg-turbo"/>
+  <use name="zlib"/>
+  <use name="eigen"/>
+  <use name="OpenBLAS"/>
+</tool>
+EOF_TOOLFILE
+
+## IMPORT scram-tools-post
diff --git a/opencv.spec b/opencv.spec
new file mode 100644
index 00000000000..5bf45e00e8c
--- /dev/null
+++ b/opencv.spec
@@ -0,0 +1,37 @@
+### RPM external opencv 4.3.0
+## INITENV +PATH PYTHON27PATH %{i}/${PYTHON_LIB_SITE_PACKAGES}
+## INITENV +PATH PYTHON3PATH %{i}/${PYTHON3_LIB_SITE_PACKAGES}
+%define tag %{realversion}
+%define branch master
+%define github_user opencv
+
+Source: git+https://github.com/%{github_user}/opencv.git?obj=%{branch}/%{tag}&export=%{n}-%{realversion}&output=/%{n}-%{realversion}-%{tag}.tgz
+BuildRequires: cmake ninja
+Requires: python python3 py2-numpy py3-numpy libpng libjpeg-turbo libtiff zlib eigen OpenBLAS
+
+%prep
+%setup -n %{n}-%{realversion}
+
+%build
+rm -rf ../build
+mkdir ../build
+cd ../build
+
+cmake ../%{n}-%{realversion} \
+    -GNinja \
+    -DCMAKE_INSTALL_PREFIX="%{i}" \
+    -DCMAKE_INSTALL_LIBDIR=lib \
+    -DPYTHON2_EXECUTABLE:FILEPATH="${PYTHON_ROOT}/bin/python" \
+    -DPYTHON2_INCLUDE_DIR:PATH="${PYTHON_ROOT}/include/python2.7" \
+    -DPYTHON2_LIBRARY:FILEPATH="${PYTHON_ROOT}/lib/libpython2.7.so" \
+    -DPYTHON3_EXECUTABLE:FILEPATH="${PYTHON3_ROOT}/bin/python3" \
+    -DPYTHON3_INCLUDE_DIR:PATH="${PYTHON3_ROOT}/include/python3.8" \
+    -DPYTHON3_LIBRARY:FILEPATH="${PYTHON3_ROOT}/lib/libpython3.8.so" \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_PREFIX_PATH="${LIBPNG_ROOT};${LIBTIFF_ROOT};${LIBJPEG_TURBO_ROOT};${ZLIB_ROOT};${PYTHON_ROOT};${PYTHON3_ROOT};${PY2_NUMPY_ROOT};${PY3_NUMPY_ROOT};${EIGEN_ROOT};${OPENBLAS_ROOT}"
+
+ninja -v %{makeprocesses} -l $(getconf _NPROCESSORS_ONLN)
+
+%install
+cd ../build
+ninja -v %{makeprocesses} -l $(getconf _NPROCESSORS_ONLN) install
diff --git a/python_tools.spec b/python_tools.spec
index 4f94110c346..1e92ed59e2a 100644
--- a/python_tools.spec
+++ b/python_tools.spec
@@ -3,7 +3,7 @@
 ## INITENV +PATH PYTHON3PATH %{i}/${PYTHON3_LIB_SITE_PACKAGES}
 Source: none
  
-Requires: root curl python python3 xrootd llvm hdf5 mxnet-predict
+Requires: root curl python python3 xrootd llvm hdf5 mxnet-predict opencv
 
 Requires: py2-scipy
 Requires: py2-Keras