diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c2ca1bfa5..4c2c44a29 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,10 +4,6 @@ before_script:
   - export GRADLE_USER_HOME=`pwd`/.gradle
   - export VERSION_NAME=$(grep -E "versionName " buildSrc/src/main/kotlin/ProtonMail.kt | awk '{print $5}' | sed s/\"//g)
   - export VERSION_CODE=$(grep -E "versionCode " buildSrc/src/main/kotlin/ProtonMail.kt | awk '{print $5}' | sed s/\"//g)
-  - !reference [.checkout-core-submodule, before_script] # included from checkout-core.gitlab-ci.yml
-
-variables:
-  ORG_GRADLE_PROJECT_useCoreGitSubmodule: "true" # see included checkout-core.gitlab-ci.yml for usage context
 
 image: ${CI_REGISTRY}/android/shared/docker-android:v1.0.0
 
@@ -31,7 +27,6 @@ stages:
 
 detekt analysis:
   stage: analyze
-  extends: .checkout_core_submodule_job
   tags:
     - large
   except:
@@ -47,7 +42,6 @@ detekt analysis:
 
 build debug:
   stage: build
-  extends: .checkout_core_submodule_job
   tags:
     - xlarge-k8s
   script:
@@ -60,7 +54,6 @@ build debug:
 
 build uiAutomation:
   stage: build
-  extends: .checkout_core_submodule_job
   tags:
     - xlarge-k8s
   script:
@@ -73,7 +66,6 @@ build uiAutomation:
 
 build alpha:
   stage: build
-  extends: .checkout_core_submodule_job
   when: 'manual'
   only:
     - develop
@@ -89,7 +81,6 @@ build alpha:
 
 build release:
   stage: build
-  extends: .checkout_core_submodule_job
   except:
     - schedules
   only:
@@ -108,7 +99,6 @@ build release:
 
 unit tests:
   stage: test
-  extends: .checkout_core_submodule_job
   tags:
     - xlarge-k8s
   script:
@@ -232,11 +222,6 @@ include:
     ref: main
     file: '/ci/templates-shared/appetize-integration.yml'
 
-  - project: 'proton/mobile/android/proton-libs'
-    ref: main
-    file: '/ci/templates/checkout-core.gitlab-ci.yml'
-
-
 startReview:
   before_script:
     - export VERSION_NAME=$(grep -E "versionName " buildSrc/src/main/kotlin/ProtonMail.kt | awk '{print $5}' | sed s/\"//g)
diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index 72af31f5f..000000000
--- a/.gitmodules
+++ /dev/null
@@ -1,3 +0,0 @@
-[submodule "proton-libs"]
-	path = proton-libs
-	url = ../../../proton/mobile/android/proton-libs
diff --git a/app/old.build.gradle b/app/old.build.gradle
index 855a6cb93..74384d5f4 100644
--- a/app/old.build.gradle
+++ b/app/old.build.gradle
@@ -21,7 +21,7 @@
 dependencies {
     // region libs
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation project(':gopenpgp')
+    implementation(files("../../proton-libs/gopenpgp/gopenpgp.aar"))
     implementation files('libs/commons-email-1.3.jar')
     implementation files('libs/mail.jar')
     implementation files('libs/mail-additional.jar')
diff --git a/gopenpgp/build-config.json b/gopenpgp/build-config.json
deleted file mode 100644
index f0407cf05..000000000
--- a/gopenpgp/build-config.json
+++ /dev/null
@@ -1,31 +0,0 @@
-{
-    "go_version":"1.17.8",
-    "build_dir":"build",
-    "out_dir":"out",
-    "go_mobile_dir":"mobile",
-    "go_mobile_flags": [
-        "-x",
-        "-ldflags=\"-s -w \""
-    ],
-    "build_name":"gopenpgp",
-    "commit_message": "Build for gopenpgp v2.4.6 and go-srp v0.0.3",
-    "upload_branch": "update-2.4.6+0.0.3",
-    "java_pkg":"com.proton.gopenpgp",
-    "targets":["android"],
-    "requirements": [
-        {
-            "module":
-            {
-                "path":"github.com/ProtonMail/gopenpgp/v2",
-                "version":"v2.4.6"
-            },
-            "packages": ["crypto", "armor", "constants", "models", "subtle", "helper"]
-        },
-        {
-            "module":{
-                "path":"github.com/ProtonMail/go-srp",
-                "version": "v0.0.3"
-            }
-        }
-    ]
-}
diff --git a/gopenpgp/build.gradle b/gopenpgp/build.gradle
deleted file mode 100644
index c8c333263..000000000
--- a/gopenpgp/build.gradle
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (c) 2022 Proton AG
- *
- * This file is part of Proton Mail.
- *
- * Proton Mail is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Proton Mail is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Proton Mail. If not, see https://www.gnu.org/licenses/.
- */
-
-configurations.maybeCreate("default")
-artifacts.add("default", file('gopenpgp.aar'))
diff --git a/gopenpgp/gopenpgp-sources.jar b/gopenpgp/gopenpgp-sources.jar
deleted file mode 100644
index 3b24b70f7..000000000
Binary files a/gopenpgp/gopenpgp-sources.jar and /dev/null differ
diff --git a/gopenpgp/gopenpgp.aar b/gopenpgp/gopenpgp.aar
deleted file mode 100644
index 46ed40c2d..000000000
Binary files a/gopenpgp/gopenpgp.aar and /dev/null differ
diff --git a/gradle.properties b/gradle.properties
index a5928dc82..9f2a3a638 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -49,5 +49,7 @@ org.aspectj.weaver.Dump.exception=false
 # https://github.com/bcgit/bc-java/issues/762
 android.jetifier.ignorelist=bcprov-jdk15on
 
-# By default use core libs from Git Submodule.
-useCoreGitSubmodule=false
+# IncludeGit Gradle Plugin: override include with local.
+#auto.include.git.dirs=../
+#local.git.proton-libs=../proton-libs
+
diff --git a/proton-libs b/proton-libs
deleted file mode 160000
index f09138ec2..000000000
--- a/proton-libs
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit f09138ec2e95655d31072369d4319142be948b82
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 152cc34c1..badeae1cb 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -19,28 +19,6 @@
 
 rootProject.name = "ProtonMail"
 
-
-val (projects, modules) = rootDir.projectsAndModules()
-
-println("Projects: ${projects.sorted().joinToString()}")
-println("Modules: ${modules.sorted().joinToString()}")
-
-for (p in projects) includeBuild(p)
-for (m in modules) include(m)
-
-// Use core libs from maven artifacts or from git submodule using Gradle's included build:
-// - to enable/disable locally: gradle.properties > useCoreGitSubmodule
-// - to enable/disable on CI: .gitlab-ci.yml > ORG_GRADLE_PROJECT_useCoreGitSubmodule
-val coreSubmoduleDir = rootDir.resolve("proton-libs")
-extra.set("coreSubmoduleDir", coreSubmoduleDir)
-val includeCoreLibsHelper = File(coreSubmoduleDir, "gradle/include-core-libs.gradle.kts")
-if (includeCoreLibsHelper.exists()) {
-    apply(from = "${coreSubmoduleDir.path}/gradle/include-core-libs.gradle.kts")
-} else if (extensions.extraProperties["useCoreGitSubmodule"].toString().toBoolean()) {
-    includeBuild("proton-libs")
-    println("Core libs from git submodule `$coreSubmoduleDir`")
-}
-
 pluginManagement {
     repositories {
         mavenCentral()
@@ -50,6 +28,22 @@ pluginManagement {
     }
 }
 
+plugins {
+    id("me.proton.core.gradle-plugins.include-core-build") version "1.1.1"
+}
+
+includeCoreBuild {
+    branch.set("main")
+    includeBuild("gopenpgp")
+}
+
+val (projects, modules) = rootDir.projectsAndModules()
+
+println("Projects: ${projects.sorted().joinToString()}")
+println("Modules: ${modules.sorted().joinToString()}")
+
+for (p in projects) includeBuild(p)
+for (m in modules) include(m)
 
 fun File.projectsAndModules() : Pair<Set<String>, Set<String>> {
     val blacklist = setOf(