diff --git a/3rdparty/ext_gmic/CMakeLists.txt b/3rdparty/ext_gmic/CMakeLists.txt
index 0ceb0b85d9..3a50d4205b 100644
--- a/3rdparty/ext_gmic/CMakeLists.txt
+++ b/3rdparty/ext_gmic/CMakeLists.txt
@@ -1,41 +1,42 @@
 SET(PREFIX_ext_gmic "${EXTPREFIX}" )
 
 # Download the gmic sources
 ExternalProject_Add( ext_gmic_base
     DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR}
-    URL https://gmic.eu/files/source/gmic_2.6.7.tar.gz
-    URL_MD5 1d55ec5d349ccf0ef78cf8d1b4a42af8
+    URL https://gmic.eu/files/source/gmic_2.7.1.tar.gz
+    URL_MD5 11a947bb2fc1dfdd40995982c5c448eb
 
     PATCH_COMMAND ${PATCH_COMMAND} -p1 -i ${CMAKE_CURRENT_SOURCE_DIR}/cmake.diff
           COMMAND  ${PATCH_COMMAND} -p1 -i ${CMAKE_CURRENT_SOURCE_DIR}/no_threads.diff
 
     SOURCE_DIR gmic
 
     CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${PREFIX_ext_gmic} -D -DCMAKE_BUILD_TYPE=Release ${GLOBAL_PROFILE}
 
     BUILD_COMMAND ""
     INSTALL_COMMAND ""
 
     BUILD_IN_SOURCE 1
 )
 
 # Download and build gmic-qt
 # FIXME: Forcing CMAKE_BUILD_TYPE to Release
 ExternalProject_Add( ext_gmic_qt
     DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR}
-    URL https://github.com/c-koi/gmic-qt/archive/v.2.6.7.tar.gz
-    URL_MD5 bdbd6e77d78e478e8653c1396065afc5
+    URL https://github.com/c-koi/gmic-qt/archive/v.2.7.0.tar.gz
+    URL_MD5 b18577dfd5be0311bdad7737b56386dc
     PATCH_COMMAND ${PATCH_COMMAND} -p1 -i ${CMAKE_CURRENT_SOURCE_DIR}/desktop_icon.diff
+          COMMAND  ${PATCH_COMMAND} -p1 -i ${CMAKE_CURRENT_SOURCE_DIR}/gmic-qt-cmake.diff
 
     SOURCE_DIR gmic-qt
     INSTALL_DIR ${PREFIX_ext_gmic}
 
     CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${PREFIX_ext_gmic} -DGMIC_QT_HOST=krita -DCMAKE_BUILD_TYPE=Release ${GLOBAL_PROFILE}
 
     UPDATE_COMMAND ""
 
     DEPENDS ext_gmic_base
 )
 
 add_custom_target(ext_gmic)
 add_dependencies(ext_gmic ext_gmic_qt)
diff --git a/3rdparty/ext_gmic/cmake.diff b/3rdparty/ext_gmic/cmake.diff
index 7f9a989c24..888c064e0f 100644
--- a/3rdparty/ext_gmic/cmake.diff
+++ b/3rdparty/ext_gmic/cmake.diff
@@ -1,13 +1,13 @@
 diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 3df1f8a..0bee815 100644
+index dd8ecb8..be0c1c7 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
 @@ -53,7 +53,7 @@
  #  knowledge of the CeCILL and CeCILL-C licenses and that you accept its terms.
  #
  
--cmake_minimum_required(VERSION 3.9)
+-cmake_minimum_required(VERSION 3.8)
 +cmake_minimum_required(VERSION 3.5)
  cmake_policy(SET CMP0046 OLD)
  
  if(CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR)
diff --git a/3rdparty/ext_gmic/gmic-qt-cmake.diff b/3rdparty/ext_gmic/gmic-qt-cmake.diff
new file mode 100644
index 0000000000..b703c7cae8
--- /dev/null
+++ b/3rdparty/ext_gmic/gmic-qt-cmake.diff
@@ -0,0 +1,22 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 9da4953..4fd8c7b 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -272,7 +272,7 @@ set (gmic_qt_SRCS
+   src/FilterParameters/ChoiceParameter.h
+   src/FilterParameters/ColorParameter.h
+   src/FilterParameters/ConstParameter.h
+-  src/FilterParameters/CustomDoubleSpinbox.h
++  src/FilterParameters/CustomDoubleSpinBox.h
+   src/FilterParameters/FileParameter.h
+   src/FilterParameters/FilterParametersWidget.h
+   src/FilterParameters/FloatParameter.h
+@@ -344,7 +344,7 @@ set (gmic_qt_SRCS
+   src/FilterParameters/ChoiceParameter.cpp
+   src/FilterParameters/ColorParameter.cpp
+   src/FilterParameters/ConstParameter.cpp
+-  src/FilterParameters/CustomDoubleSpinbox.cpp
++  src/FilterParameters/CustomDoubleSpinBox.cpp
+   src/FilterParameters/FileParameter.cpp
+   src/FilterParameters/FilterParametersWidget.cpp
+   src/FilterParameters/FloatParameter.cpp
diff --git a/3rdparty/ext_gmic/no_threads.diff b/3rdparty/ext_gmic/no_threads.diff
index 066e23d138..916ddc4391 100644
--- a/3rdparty/ext_gmic/no_threads.diff
+++ b/3rdparty/ext_gmic/no_threads.diff
@@ -1,13 +1,13 @@
 diff --git a/src/CImg.h b/src/CImg.h
-index 9c116d2..afd8694 100644
+index 6fe7455..a1450f4 100644
 --- a/src/CImg.h
 +++ b/src/CImg.h
-@@ -3137,7 +3137,7 @@ namespace cimg_library_suffixed {
+@@ -3194,7 +3194,7 @@ namespace cimg_library_suffixed {
  #if defined(cimg_use_fftw3)
-     static struct FFTW3_info {
+     struct FFTW3_info {
        FFTW3_info() {
 -        fftw_init_threads();
-+//        fftw_init_threads();
++        //fftw_init_threads();
        }
-     } _FFTW3_info;
- #endif
+     }; // struct FFTW3_info { ...
+     static FFTW3_info _FFTW3_info;