diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 879d2cf..5e87b55 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -63,12 +63,12 @@ ruby-2.6-golang-1.12-git-2.22 test: *test_custom
 
 
 # Used by GitLab CE/EE: https://gitlab.com/gitlab-org/gitlab-ee/blob/master/.gitlab-ci.yml
-ruby-2.6.3-golang-1.11-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-9.6-graphicsmagick-1.3.29 test: *test_custom
-ruby-2.6.3-golang-1.11-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-10-graphicsmagick-1.3.29 test: *test_custom
-ruby-2.6.3-golang-1.11-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-11-graphicsmagick-1.3.29 test: *test_custom
+ruby-2.6.3-golang-1.11-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-9.6-graphicsmagick-1.3.33 test: *test_custom
+ruby-2.6.3-golang-1.11-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-10-graphicsmagick-1.3.33 test: *test_custom
+ruby-2.6.3-golang-1.11-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-11-graphicsmagick-1.3.33 test: *test_custom
 
 # gitlab:assets:compile step
-ruby-2.6.3-git-2.22-chrome-73.0-node-12.x-yarn-1.16-graphicsmagick-1.3.29-docker-18.06.1 test: *test_custom
+ruby-2.6.3-git-2.22-chrome-73.0-node-12.x-yarn-1.16-graphicsmagick-1.3.33-docker-18.06.1 test: *test_custom
 
 # Used by www-gitlab-com's rspec job: https://gitlab.com/gitlab-com/www-gitlab-com/blob/master/.gitlab-ci.yml
 ruby-2.4.5-git-2.18-chrome-69.0-docker-18.06.1 test: *test_custom
@@ -112,12 +112,12 @@ ruby-2.5-golang-1.12-git-2.22: *build_and_deploy_custom
 ruby-2.6-golang-1.12-git-2.22: *build_and_deploy_custom
 
 # Used by GitLab CE/EE: https://gitlab.com/gitlab-org/gitlab-ee/blob/master/.gitlab-ci.yml
-ruby-2.6.3-golang-1.11-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-9.6-graphicsmagick-1.3.29: *build_and_deploy_custom
-ruby-2.6.3-golang-1.11-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-10-graphicsmagick-1.3.29: *build_and_deploy_custom
-ruby-2.6.3-golang-1.11-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-11-graphicsmagick-1.3.29: *build_and_deploy_custom
+ruby-2.6.3-golang-1.11-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-9.6-graphicsmagick-1.3.33: *build_and_deploy_custom
+ruby-2.6.3-golang-1.11-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-10-graphicsmagick-1.3.33: *build_and_deploy_custom
+ruby-2.6.3-golang-1.11-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-11-graphicsmagick-1.3.33: *build_and_deploy_custom
 
 # gitlab:assets:compile step
-ruby-2.6.3-git-2.22-chrome-73.0-node-12.x-yarn-1.16-graphicsmagick-1.3.29-docker-18.06.1: *build_and_deploy_custom
+ruby-2.6.3-git-2.22-chrome-73.0-node-12.x-yarn-1.16-graphicsmagick-1.3.33-docker-18.06.1: *build_and_deploy_custom
 
 # Used by www-gitlab-com's rspec job: https://gitlab.com/gitlab-com/www-gitlab-com/blob/master/.gitlab-ci.yml
 ruby-2.4.5-git-2.18-chrome-69.0-docker-18.06.1: *build_and_deploy_custom
diff --git a/scripts/custom-docker-build b/scripts/custom-docker-build
index 36ac0cd..350a628 100755
--- a/scripts/custom-docker-build
+++ b/scripts/custom-docker-build
@@ -127,6 +127,10 @@ function print_graphicsmagick_args() {
             GRAPHISMAGICK_VERSION=1.3.29
             GRAPHISMAGICK_DOWNLOAD_SHA256=de820cd10597205941a7e9d02c2e679231e92e8e769c204ef09034d2279ad453
             ;;
+        1.3.33)
+            GRAPHISMAGICK_VERSION=1.3.33
+            GRAPHISMAGICK_DOWNLOAD_SHA256=00ea0df7c78c903cce325f402429bcd3924168cf39277f743a0641d47c411ee8
+            ;;
         *) echo "Unknown graphicsmagick version $1"; exit 1;
     esac