diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index eb1ba98..fc520a3 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -63,19 +63,19 @@ ruby-2.6-golang-1.12-git-2.24 test: *test_custom
 ruby-2.6-golang-1.13-git-2.24 test: *test_custom
 
 # Used by GitLab: https://gitlab.com/gitlab-org/gitlab/blob/master/.gitlab-ci.yml
-ruby-2.6.3-golang-1.12-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-1.12-git-2.22-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-9.6-graphicsmagick-1.3.33 test: *test_custom
-ruby-2.6.3-golang-1.12-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-1.12-git-2.22-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-10-graphicsmagick-1.3.33 test: *test_custom
-ruby-2.6.3-golang-1.12-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-11-graphicsmagick-1.3.33 test: *test_custom
-ruby-2.6.5-golang-1.12-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-9.6-graphicsmagick-1.3.33 test: *test_custom
-ruby-2.6.5-golang-1.12-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-10-graphicsmagick-1.3.33 test: *test_custom
-ruby-2.6.5-golang-1.12-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-11-graphicsmagick-1.3.33 test: *test_custom
+ruby-2.6.3-golang-1.12-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-9.6-graphicsmagick-1.3.34 test: *test_custom
+ruby-2.6.3-golang-1.12-git-2.22-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-9.6-graphicsmagick-1.3.34 test: *test_custom
+ruby-2.6.3-golang-1.12-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-10-graphicsmagick-1.3.34 test: *test_custom
+ruby-2.6.3-golang-1.12-git-2.22-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-10-graphicsmagick-1.3.34 test: *test_custom
+ruby-2.6.3-golang-1.12-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-11-graphicsmagick-1.3.34 test: *test_custom
+ruby-2.6.5-golang-1.12-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-9.6-graphicsmagick-1.3.34 test: *test_custom
+ruby-2.6.5-golang-1.12-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-10-graphicsmagick-1.3.34 test: *test_custom
+ruby-2.6.5-golang-1.12-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-11-graphicsmagick-1.3.34 test: *test_custom
 
 # gitlab:assets:compile step
-ruby-2.6.3-git-2.22-chrome-73.0-node-12.x-yarn-1.16-graphicsmagick-1.3.33-docker-19.03.1 test: *test_custom
-ruby-2.6.3-git-2.22-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-graphicsmagick-1.3.33-docker-19.03.1 test: *test_custom
-ruby-2.6.5-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-graphicsmagick-1.3.33-docker-19.03.1 test: *test_custom
+ruby-2.6.3-git-2.22-chrome-73.0-node-12.x-yarn-1.16-graphicsmagick-1.3.34-docker-19.03.1 test: *test_custom
+ruby-2.6.3-git-2.22-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-graphicsmagick-1.3.34-docker-19.03.1 test: *test_custom
+ruby-2.6.5-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-graphicsmagick-1.3.34-docker-19.03.1 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-2.6.3-git-2.22-chrome-74.0-node-12.x-yarn-1.16-docker-19.03.1 test: *test_custom
@@ -124,19 +124,19 @@ ruby-2.6-golang-1.12-git-2.24: *build_and_deploy_custom
 ruby-2.6-golang-1.13-git-2.24: *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-1.12-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-1.12-git-2.22-lfs-2.9-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-1.12-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-1.12-git-2.22-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-10-graphicsmagick-1.3.33: *build_and_deploy_custom
-ruby-2.6.3-golang-1.12-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-11-graphicsmagick-1.3.33: *build_and_deploy_custom
-ruby-2.6.5-golang-1.12-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-9.6-graphicsmagick-1.3.33: *build_and_deploy_custom
-ruby-2.6.5-golang-1.12-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-10-graphicsmagick-1.3.33: *build_and_deploy_custom
-ruby-2.6.5-golang-1.12-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-11-graphicsmagick-1.3.33: *build_and_deploy_custom
+ruby-2.6.3-golang-1.12-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-9.6-graphicsmagick-1.3.34: *build_and_deploy_custom
+ruby-2.6.3-golang-1.12-git-2.22-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-9.6-graphicsmagick-1.3.34: *build_and_deploy_custom
+ruby-2.6.3-golang-1.12-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-10-graphicsmagick-1.3.34: *build_and_deploy_custom
+ruby-2.6.3-golang-1.12-git-2.22-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-10-graphicsmagick-1.3.34: *build_and_deploy_custom
+ruby-2.6.3-golang-1.12-git-2.22-chrome-73.0-node-12.x-yarn-1.16-postgresql-11-graphicsmagick-1.3.34: *build_and_deploy_custom
+ruby-2.6.5-golang-1.12-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-9.6-graphicsmagick-1.3.34: *build_and_deploy_custom
+ruby-2.6.5-golang-1.12-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-10-graphicsmagick-1.3.34: *build_and_deploy_custom
+ruby-2.6.5-golang-1.12-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-postgresql-11-graphicsmagick-1.3.34: *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-1.3.33-docker-19.03.1: *build_and_deploy_custom
-ruby-2.6.3-git-2.22-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-graphicsmagick-1.3.33-docker-19.03.1: *build_and_deploy_custom
-ruby-2.6.5-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-graphicsmagick-1.3.33-docker-19.03.1: *build_and_deploy_custom
+ruby-2.6.3-git-2.22-chrome-73.0-node-12.x-yarn-1.16-graphicsmagick-1.3.34-docker-19.03.1: *build_and_deploy_custom
+ruby-2.6.3-git-2.22-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-graphicsmagick-1.3.34-docker-19.03.1: *build_and_deploy_custom
+ruby-2.6.5-git-2.24-lfs-2.9-chrome-73.0-node-12.x-yarn-1.16-graphicsmagick-1.3.34-docker-19.03.1: *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-2.6.3-git-2.22-chrome-74.0-node-12.x-yarn-1.16-docker-19.03.1: *build_and_deploy_custom
diff --git a/scripts/custom-docker-build b/scripts/custom-docker-build
index 05225c1..7bb8634 100755
--- a/scripts/custom-docker-build
+++ b/scripts/custom-docker-build
@@ -154,6 +154,10 @@ function print_graphicsmagick_args() {
             GRAPHISMAGICK_VERSION=1.3.33
             GRAPHISMAGICK_DOWNLOAD_SHA256=00ea0df7c78c903cce325f402429bcd3924168cf39277f743a0641d47c411ee8
             ;;
+        1.3.34)
+            GRAPHISMAGICK_VERSION=1.3.34
+            GRAPHISMAGICK_DOWNLOAD_SHA256=4717f7a32d964c515d83706fd52d34e089c2ffa35f8fbf43c923ce19343cf2f4
+            ;;
         *) echo "Unknown graphicsmagick version $1"; exit 1;
     esac