diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4feb3435..09dbbe73 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -482,30 +482,7 @@ test-release-clang-cpp14-qt5.15.1:
 
 
 
-#-----------  Job Informations:
-# Type:       Build: release
-# OS:         Linux
-# Compiler:   clang
-# Language:   cpp14
-
-iwyu-release-clang-cpp14-qt5.15.1:
-  stage: build
-  script: "CI/ci-linux-build.sh"
-  image: gitlab.vci.rwth-aachen.de:4567/docker/docker/docker-openmesh-container
-  tags:
-    - Linux
-    - stretch
-  variables:
-    COMPILER: "clang"
-    LANGUAGE: "cpp14"
-    BUILD_TYPE: "release"
-    QTVERSION: "qt5.15.1"
-    IWYU: "yes"
-    VECTORCHECKS: "yes"
-  artifacts:
-    paths:
-    - build-clang-cpp14-qt5.15.1-release-iwyu-vectorchecks/compile_commands.json
-    - build-clang-cpp14-qt5.15.1-release-iwyu-vectorchecks/iwyu.dump
+#{linux-iwyu-job.yml, BUILDTYPE=release, COMPILER=clang, LANGUAGE=cpp14, QT_VERSION=qt5.15.1}
 #-----------  Job Informations:
 # Type:       Build: release
 # OS:         Linux
@@ -534,47 +511,6 @@ nvc-release-clang-cpp14-qt5.15.1:
 # MAC tasks
 # -----------------
 
-#-----------  Job Informations:
-# Type:       Build+Test: debug
-# OS:         Mac
-# Language:   cpp11
-
-macos-cpp11-debug:
-    stage: build
-    script: "CI/ci-mac-build.sh cpp11 debug ; CI/ci-mac-test.sh cpp11 debug"
-    tags:
-      - Apple
-    artifacts:
-      paths:
-        - build-debug-cpp11/*.dmg
-        - build-debug-cpp11/*.tar.gz
-#      reports:
-#        junit:
-#          - build-debug-cpp11/Unittests/report.xml
-#          - build-debug-cpp11/Unittests/report-customvec.xml
-#          - build-debug-cpp11/Unittests/report-doublevec.xml
-
-#-----------  Job Informations:
-# Type:       Build+Test: release
-# OS:         Mac
-# Language:   cpp11
-
-macos-cpp11-release:
-    stage: build
-    script: "CI/ci-mac-build.sh cpp11 release ; CI/ci-mac-test.sh cpp11 release"
-    tags:
-      - Apple
-    artifacts:
-      paths:
-        - build-release-cpp11/*.dmg
-        - build-release-cpp11/*.tar.gz
-#      reports:
-#        junit:
-#          - build-release-cpp11/Unittests/report.xml
-#          - build-release-cpp11/Unittests/report-customvec.xml
-#          - build-release-cpp11/Unittests/report-doublevec.xml
-
-
 #-----------  Job Informations:
 # Type:       Build+Test: debug
 # OS:         Mac
diff --git a/CI/gitlab-ci/linux.yml b/CI/gitlab-ci/linux.yml
index abb53a8b..5499c5fa 100644
--- a/CI/gitlab-ci/linux.yml
+++ b/CI/gitlab-ci/linux.yml
@@ -18,5 +18,5 @@ cppcheck:
 {linux-template-job.yml, COMPILER=gcc, LANGUAGE=cpp14, QT_VERSION=qt5.15.1}
 {linux-template-job.yml, COMPILER=clang, LANGUAGE=cpp14, QT_VERSION=qt5.15.1}
 
-{linux-iwyu-job.yml, BUILDTYPE=release, COMPILER=clang, LANGUAGE=cpp14, QT_VERSION=qt5.15.1}
+#{linux-iwyu-job.yml, BUILDTYPE=release, COMPILER=clang, LANGUAGE=cpp14, QT_VERSION=qt5.15.1}
 {linux-novchecks-job.yml, BUILDTYPE=release, COMPILER=clang, LANGUAGE=cpp14, QT_VERSION=qt5.15.1}
diff --git a/CI/gitlab-ci/mac.yml b/CI/gitlab-ci/mac.yml
index 57d973c2..40107d97 100644
--- a/CI/gitlab-ci/mac.yml
+++ b/CI/gitlab-ci/mac.yml
@@ -2,9 +2,6 @@
 # MAC tasks
 # -----------------
 
-{mac-template-job.yml, BUILDTYPE=debug, LANGUAGE=cpp11}
-{mac-template-job.yml, BUILDTYPE=release, LANGUAGE=cpp11}
-
 {mac-template-job.yml, BUILDTYPE=debug, LANGUAGE=cpp14}
 {mac-template-job.yml, BUILDTYPE=release, LANGUAGE=cpp14}