Disable GCC-4.8 tests.
diff --git a/ci/build.gitlab-ci.yml b/ci/build.gitlab-ci.yml
index 6ef467f..07f1728 100644
--- a/ci/build.gitlab-ci.yml
+++ b/ci/build.gitlab-ci.yml
@@ -23,17 +23,17 @@
     - schedules
 
 ######## x86-64 ################################################################
-# GCC-4.8 (the oldest compiler we support)
-build:x86-64:linux:gcc-4.8:cxx11-on:
-  extends: .build:linux:base
-  variables:
-    EIGEN_CI_CXX_COMPILER: "g++-4.8"
-    EIGEN_CI_CC_COMPILER: "gcc-4.8"
-    EIGEN_TEST_CXX11: "on"
-  tags:
-    - eigen-runner
-    - linux
-    - x86-64
+# # GCC-4.8 (the oldest compiler we support)
+# build:x86-64:linux:gcc-4.8:cxx11-on:
+#   extends: .build:linux:base
+#   variables:
+#     EIGEN_CI_CXX_COMPILER: "g++-4.8"
+#     EIGEN_CI_CC_COMPILER: "gcc-4.8"
+#     EIGEN_TEST_CXX11: "on"
+#   tags:
+#     - eigen-runner
+#     - linux
+#     - x86-64
 
 # GCC-9
 build:x86-64:linux:gcc-9:cxx11-on:
diff --git a/ci/test.gitlab-ci.yml b/ci/test.gitlab-ci.yml
index 594f360..ecb80f8 100644
--- a/ci/test.gitlab-ci.yml
+++ b/ci/test.gitlab-ci.yml
@@ -30,27 +30,27 @@
     - schedules
 
 ##### x86-64 ###################################################################
-# GCC-4.8
-.test:x86-64:linux:gcc-4.8:cxx11-on:
-  extends: .test:linux:base
-  variables:
-    EIGEN_CI_CXX_COMPILER: g++-4.8
-    EIGEN_CI_CC_COMPILER: gcc-4.8
-  needs: [ "build:x86-64:linux:gcc-4.8:cxx11-on" ]
-  tags: 
-    - eigen-runner
-    - linux
-    - x86-64
+# # GCC-4.8
+# .test:x86-64:linux:gcc-4.8:cxx11-on:
+#   extends: .test:linux:base
+#   variables:
+#     EIGEN_CI_CXX_COMPILER: g++-4.8
+#     EIGEN_CI_CC_COMPILER: gcc-4.8
+#   needs: [ "build:x86-64:linux:gcc-4.8:cxx11-on" ]
+#   tags: 
+#     - eigen-runner
+#     - linux
+#     - x86-64
 
-test:x86-64:linux:gcc-4.8:cxx11-on:official:
-  extends: .test:x86-64:linux:gcc-4.8:cxx11-on
-  variables:
-    EIGEN_CI_TEST_LABEL: "Official"
+# test:x86-64:linux:gcc-4.8:cxx11-on:official:
+#   extends: .test:x86-64:linux:gcc-4.8:cxx11-on
+#   variables:
+#     EIGEN_CI_TEST_LABEL: "Official"
 
-test:x86-64:linux:gcc-4.8:cxx11-on:unsupported:
-  extends: .test:x86-64:linux:gcc-4.8:cxx11-on
-  variables:
-    EIGEN_CI_TEST_LABEL: "Unsupported"
+# test:x86-64:linux:gcc-4.8:cxx11-on:unsupported:
+#   extends: .test:x86-64:linux:gcc-4.8:cxx11-on
+#   variables:
+#     EIGEN_CI_TEST_LABEL: "Unsupported"
 
 # GCC-9
 .test:x86-64:linux:gcc-9:cxx11-on: