diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7c37abf..4db6544 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -57,7 +57,7 @@ rails e2e spec:
       alias: app
       variables:
         TURNIERE_DISABLE_EMAIL_DELIVERY: "1"
-        WEB_CONCURRENCY: "2"
+        WEB_CONCURRENCY: "1"
         RAILS_MAX_THREADS: "5"
         RAILS_DB_POOL: "5"
         SIDEKIQ_CONCURRENCY: "5"
@@ -115,7 +115,7 @@ rails load smoke:
       alias: app
       variables:
         TURNIERE_DISABLE_EMAIL_DELIVERY: "1"
-        WEB_CONCURRENCY: "2"
+        WEB_CONCURRENCY: "1"
         RAILS_MAX_THREADS: "5"
         RAILS_DB_POOL: "5"
         SIDEKIQ_CONCURRENCY: "5"
@@ -200,7 +200,7 @@ rails follow sync e2e spec:
         no_proxy: source-app,follower-app,source-postgres,follower-postgres,localhost,127.0.0.1
         RAILS_LOG_TO_STDOUT: "1"
         RAILS_SERVE_STATIC_FILES: "1"
-        WEB_CONCURRENCY: "2"
+        WEB_CONCURRENCY: "1"
         RAILS_MAX_THREADS: "5"
         RAILS_DB_POOL: "5"
         SIDEKIQ_CONCURRENCY: "5"
@@ -227,7 +227,7 @@ rails follow sync e2e spec:
         no_proxy: source-app,follower-app,source-postgres,follower-postgres,localhost,127.0.0.1
         RAILS_LOG_TO_STDOUT: "1"
         RAILS_SERVE_STATIC_FILES: "1"
-        WEB_CONCURRENCY: "2"
+        WEB_CONCURRENCY: "1"
         RAILS_MAX_THREADS: "5"
         RAILS_DB_POOL: "5"
         SIDEKIQ_CONCURRENCY: "5"
diff --git a/docker-compose.blackbox-follow.yml b/docker-compose.blackbox-follow.yml
index 25e946c..4a2d10e 100644
--- a/docker-compose.blackbox-follow.yml
+++ b/docker-compose.blackbox-follow.yml
@@ -38,7 +38,7 @@ services:
         condition: service_healthy
     environment:
       RAILS_ENV: ${TURNIERE_BLACKBOX_RAILS_ENV:-production}
-      WEB_CONCURRENCY: ${TURNIERE_BLACKBOX_WEB_CONCURRENCY:-2}
+      WEB_CONCURRENCY: ${TURNIERE_BLACKBOX_WEB_CONCURRENCY:-1}
       RAILS_MAX_THREADS: ${TURNIERE_BLACKBOX_RAILS_MAX_THREADS:-5}
       RAILS_DB_POOL: ${TURNIERE_BLACKBOX_RAILS_DB_POOL:-5}
       SIDEKIQ_CONCURRENCY: ${TURNIERE_BLACKBOX_SIDEKIQ_CONCURRENCY:-5}
@@ -66,7 +66,7 @@ services:
         condition: service_healthy
     environment:
       RAILS_ENV: ${TURNIERE_BLACKBOX_RAILS_ENV:-production}
-      WEB_CONCURRENCY: ${TURNIERE_BLACKBOX_WEB_CONCURRENCY:-2}
+      WEB_CONCURRENCY: ${TURNIERE_BLACKBOX_WEB_CONCURRENCY:-1}
       RAILS_MAX_THREADS: ${TURNIERE_BLACKBOX_RAILS_MAX_THREADS:-5}
       RAILS_DB_POOL: ${TURNIERE_BLACKBOX_RAILS_DB_POOL:-5}
       SIDEKIQ_CONCURRENCY: ${TURNIERE_BLACKBOX_SIDEKIQ_CONCURRENCY:-5}
diff --git a/docker-compose.blackbox.yml b/docker-compose.blackbox.yml
index 28a2244..2762984 100644
--- a/docker-compose.blackbox.yml
+++ b/docker-compose.blackbox.yml
@@ -20,7 +20,7 @@ services:
         condition: service_healthy
     environment:
       RAILS_ENV: ${TURNIERE_BLACKBOX_RAILS_ENV:-production}
-      WEB_CONCURRENCY: ${TURNIERE_BLACKBOX_WEB_CONCURRENCY:-2}
+      WEB_CONCURRENCY: ${TURNIERE_BLACKBOX_WEB_CONCURRENCY:-1}
       RAILS_MAX_THREADS: ${TURNIERE_BLACKBOX_RAILS_MAX_THREADS:-5}
       RAILS_DB_POOL: ${TURNIERE_BLACKBOX_RAILS_DB_POOL:-5}
       SIDEKIQ_CONCURRENCY: ${TURNIERE_BLACKBOX_SIDEKIQ_CONCURRENCY:-5}