diff --git a/.circleci/config.yml b/.circleci/config.yml
index 4fc07ba770..277219495e 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -66,20 +66,6 @@ jobs:
           name: Deployment
           command: sh ./gradle/deploy.sh
 
-  maven-central-sync:
-    executor: circle-jdk-executor
-    steps:
-      - checkout
-      - run:
-          name: Decrypt properties
-          command: openssl aes-256-cbc -d -in gradle.properties.enc -out gradle.properties -k "$KEY" -md sha256
-      - deploy:
-          name: Maven Central sync
-          # arbitrarily choose one project to run the `mavenCentralSync` task since all use the same Bintray package
-          command: ./gradlew :micrometer-core:mavenCentralSync -Prelease.useLastTag=true -x bintrayPublish -x bintrayUpload -x bintrayCreateVersion -x bintrayCreatePackage
-          # Maven Central Sync might take more than 10 minutes
-          no_output_timeout: 30m
-
 workflows:
   version: 2
   build_prs_deploy_snapshots:
@@ -116,16 +102,3 @@ workflows:
           filters:
             tags:
               only: /^v\d+\.\d+\.\d+(-rc\.\d+)?$/
-      - staging-approval:
-          type: approval
-          requires:
-            - deploy
-          filters:
-            tags:
-              only: /^v\d+\.\d+\.\d+(-rc\.\d+)?$/
-      - maven-central-sync:
-          requires:
-            - staging-approval
-          filters:
-            tags:
-              only: /^v\d+\.\d+\.\d+(-rc\.\d+)?$/
diff --git a/build.gradle b/build.gradle
index b4dc8ba1e0..97654d6ac7 100644
--- a/build.gradle
+++ b/build.gradle
@@ -176,7 +176,7 @@ subprojects {
         }
 
         signing {
-            required = hasProperty('SIGNING_KEY')
+            required = System.env.CIRCLE_STAGE == 'deploy'
             useInMemoryPgpKeys(findProperty('SIGNING_KEY'), findProperty('SIGNING_PASSWORD'))
             sign publishing.publications.nebula
         }
diff --git a/scripts/sync-to-maven-central.sh b/scripts/sync-to-maven-central.sh
deleted file mode 100755
index 2b626a3ada..0000000000
--- a/scripts/sync-to-maven-central.sh
+++ /dev/null
@@ -1,52 +0,0 @@
-#!/usr/bin/env bash
-set -e
-
-if [[ -z "$VERSION" ]]
-then
-    echo "\$VERSION must be set."
-    exit -1
-else
-    echo "Syncing version $VERSION"
-fi
-
-MODULES=(
-    micrometer-core
-    micrometer-test
-    micrometer-registry-atlas
-    micrometer-registry-cloudwatch
-    micrometer-registry-cloudwatch2
-    micrometer-registry-datadog
-    micrometer-registry-ganglia
-    micrometer-registry-graphite
-    micrometer-registry-influx
-    micrometer-registry-jmx
-    micrometer-registry-new-relic
-    micrometer-registry-prometheus
-    micrometer-registry-signalfx
-    micrometer-registry-statsd
-    micrometer-registry-wavefront
-    micrometer-jersey2
-    micrometer-registry-stackdriver
-    micrometer-registry-elastic
-    micrometer-registry-kairos
-    micrometer-registry-dynatrace
-    micrometer-registry-humio
-    micrometer-registry-azure-monitor
-    micrometer-registry-appoptics
-)
-
-for module in "${MODULES[@]}"
-do
-   :
-   echo "Syncing ${module}"
-   curl \
-			-s \
-			--connect-timeout 240 \
-			--max-time 2700 \
-			-u ${BINTRAY_USERNAME}:${BINTRAY_API_KEY} \
-			-H "Content-Type: application/json" -d "{\"username\": \"${SONATYPE_USER_TOKEN}\", \"password\": \"${SONATYPE_PASSWORD_TOKEN}\"}" \
-			-f \
-			-X \
-			POST "https://api.bintray.com/maven_central_sync/spring/jars/${module}/versions/${VERSION}" > /dev/null || { echo "Failed to sync" >&2; exit 1; }
-    echo "  complete"
-done