diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 267f101c..5fa21b49 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,7 +30,7 @@ on:
       - '**/src/test/**'
       - '!*.md'
   pull_request:
-    branches: [ master ]
+    branches: [ develop ]
     paths:
       - '.github/workflows/ci.yml'
       - '**/pom.xml'
@@ -39,19 +39,13 @@ on:
       - '!*.md'
   repository_dispatch:
     types: [rerun-ci]
-  schedule:
-    - cron: '0 16 */1 * *'  # once a day. UTC time
 
 concurrency:
   group: ${{ github.event_name }}-${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
-env:
-  MAVEN_OPTS: -Dspotless.apply.skip=true
-
 jobs:
   unix:
-    if: (github.event_name == 'schedule' && github.repository == 'mabaiwan/hippo4j') || (github.event_name != 'schedule')
     name: JDK ${{ matrix.java.version }} - on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     timeout-minutes: 60
@@ -68,4 +62,4 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Build with Maven
-        run: echo y | ./mvnw -B --no-transfer-progress clean install ${{ matrix.java.maven_args }}
+        run: echo y | mvn clean install -Dskip.gpg=true -Dspotless.apply.skip=true
diff --git a/pom.xml b/pom.xml
index 2cca8e09..5a97b52f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -53,6 +53,7 @@
         <netty.version>4.1.10.Final</netty.version>
         <spring-cloud-starter-netflix-hystrix.version>2.2.9.RELEASE</spring-cloud-starter-netflix-hystrix.version>
 
+        <skip.gpg>false</skip.gpg>
         <maven.javadoc.failOnError>false</maven.javadoc.failOnError>
         <maven.compiler.encoding>UTF-8</maven.compiler.encoding>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -318,6 +319,9 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-gpg-plugin</artifactId>
                 <version>1.6</version>
+                <configuration>
+                    <skip>${skip.gpg}</skip>
+                </configuration>
                 <executions>
                     <execution>
                         <goals>