diff --git a/Crane/app/build.gradle b/Crane/app/build.gradle
index f9236a3b38..2838864b8c 100644
--- a/Crane/app/build.gradle
+++ b/Crane/app/build.gradle
@@ -40,12 +40,28 @@ android {
 
         manifestPlaceholders = [ googleMapsKey : properties.getProperty("google.maps.key", "") ]
     }
+
+    signingConfigs {
+        // We use a bundled debug keystore, to allow debug builds from CI to be upgradable
+        debug {
+            storeFile rootProject.file('debug.keystore')
+            storePassword 'android'
+            keyAlias 'androiddebugkey'
+            keyPassword 'android'
+        }
+    }
+
     buildTypes {
+        debug {
+            signingConfig signingConfigs.debug
+        }
+
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
+
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
diff --git a/Crane/debug.keystore b/Crane/debug.keystore
new file mode 100644
index 0000000000..6024334a44
Binary files /dev/null and b/Crane/debug.keystore differ
diff --git a/JetNews/app/build.gradle b/JetNews/app/build.gradle
index b44bab6393..6453c74331 100644
--- a/JetNews/app/build.gradle
+++ b/JetNews/app/build.gradle
@@ -29,7 +29,21 @@ android {
         testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
     }
 
+    signingConfigs {
+        // We use a bundled debug keystore, to allow debug builds from CI to be upgradable
+        debug {
+            storeFile rootProject.file('debug.keystore')
+            storePassword 'android'
+            keyAlias 'androiddebugkey'
+            keyPassword 'android'
+        }
+    }
+
     buildTypes {
+        debug {
+            signingConfig signingConfigs.debug
+        }
+
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
diff --git a/JetNews/debug.keystore b/JetNews/debug.keystore
new file mode 100644
index 0000000000..6024334a44
Binary files /dev/null and b/JetNews/debug.keystore differ
diff --git a/Jetcaster/app/build.gradle b/Jetcaster/app/build.gradle
index f849649b5e..8d2c119294 100644
--- a/Jetcaster/app/build.gradle
+++ b/Jetcaster/app/build.gradle
@@ -54,7 +54,21 @@ android {
         exclude "/*.jar"
     }
 
+    signingConfigs {
+        // We use a bundled debug keystore, to allow debug builds from CI to be upgradable
+        debug {
+            storeFile rootProject.file('debug.keystore')
+            storePassword 'android'
+            keyAlias 'androiddebugkey'
+            keyPassword 'android'
+        }
+    }
+
     buildTypes {
+        debug {
+            signingConfig signingConfigs.debug
+        }
+
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
diff --git a/Jetcaster/debug.keystore b/Jetcaster/debug.keystore
new file mode 100644
index 0000000000..6024334a44
Binary files /dev/null and b/Jetcaster/debug.keystore differ
diff --git a/Jetchat/app/build.gradle b/Jetchat/app/build.gradle
index 453f8920c8..ab392af6a3 100644
--- a/Jetchat/app/build.gradle
+++ b/Jetchat/app/build.gradle
@@ -35,7 +35,21 @@ android {
         vectorDrawables.useSupportLibrary = true
     }
 
+    signingConfigs {
+        // We use a bundled debug keystore, to allow debug builds from CI to be upgradable
+        debug {
+            storeFile rootProject.file('debug.keystore')
+            storePassword 'android'
+            keyAlias 'androiddebugkey'
+            keyPassword 'android'
+        }
+    }
+
     buildTypes {
+        debug {
+            signingConfig signingConfigs.debug
+        }
+
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
diff --git a/Jetchat/debug.keystore b/Jetchat/debug.keystore
new file mode 100644
index 0000000000..6024334a44
Binary files /dev/null and b/Jetchat/debug.keystore differ
diff --git a/Jetsnack/app/build.gradle b/Jetsnack/app/build.gradle
index 9b17564caf..0828037083 100644
--- a/Jetsnack/app/build.gradle
+++ b/Jetsnack/app/build.gradle
@@ -34,7 +34,21 @@ android {
         testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
     }
 
+    signingConfigs {
+        // We use a bundled debug keystore, to allow debug builds from CI to be upgradable
+        debug {
+            storeFile rootProject.file('debug.keystore')
+            storePassword 'android'
+            keyAlias 'androiddebugkey'
+            keyPassword 'android'
+        }
+    }
+
     buildTypes {
+        debug {
+            signingConfig signingConfigs.debug
+        }
+
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
diff --git a/Jetsnack/debug.keystore b/Jetsnack/debug.keystore
new file mode 100644
index 0000000000..6024334a44
Binary files /dev/null and b/Jetsnack/debug.keystore differ
diff --git a/Jetsurvey/app/build.gradle b/Jetsurvey/app/build.gradle
index e095b8745e..2e2cf1f5e7 100644
--- a/Jetsurvey/app/build.gradle
+++ b/Jetsurvey/app/build.gradle
@@ -33,16 +33,32 @@ android {
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 
+    signingConfigs {
+        // We use a bundled debug keystore, to allow debug builds from CI to be upgradable
+        debug {
+            storeFile rootProject.file('debug.keystore')
+            storePassword 'android'
+            keyAlias 'androiddebugkey'
+            keyPassword 'android'
+        }
+    }
+
     buildTypes {
+        debug {
+            signingConfig signingConfigs.debug
+        }
+
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
+
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
+
     kotlinOptions {
         jvmTarget = '1.8'
     }
diff --git a/Jetsurvey/debug.keystore b/Jetsurvey/debug.keystore
new file mode 100644
index 0000000000..6024334a44
Binary files /dev/null and b/Jetsurvey/debug.keystore differ
diff --git a/Owl/app/build.gradle b/Owl/app/build.gradle
index 826f47d8e6..81e4cd89db 100644
--- a/Owl/app/build.gradle
+++ b/Owl/app/build.gradle
@@ -34,7 +34,21 @@ android {
         testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
     }
 
+    signingConfigs {
+        // We use a bundled debug keystore, to allow debug builds from CI to be upgradable
+        debug {
+            storeFile rootProject.file('debug.keystore')
+            storePassword 'android'
+            keyAlias 'androiddebugkey'
+            keyPassword 'android'
+        }
+    }
+
     buildTypes {
+        debug {
+            signingConfig signingConfigs.debug
+        }
+
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
diff --git a/Owl/debug.keystore b/Owl/debug.keystore
new file mode 100644
index 0000000000..6024334a44
Binary files /dev/null and b/Owl/debug.keystore differ
diff --git a/Rally/app/build.gradle b/Rally/app/build.gradle
index 0518105b23..ce14fe130b 100644
--- a/Rally/app/build.gradle
+++ b/Rally/app/build.gradle
@@ -35,7 +35,21 @@ android {
         vectorDrawables.useSupportLibrary = true
     }
 
+    signingConfigs {
+        // We use a bundled debug keystore, to allow debug builds from CI to be upgradable
+        debug {
+            storeFile rootProject.file('debug.keystore')
+            storePassword 'android'
+            keyAlias 'androiddebugkey'
+            keyPassword 'android'
+        }
+    }
+
     buildTypes {
+        debug {
+            signingConfig signingConfigs.debug
+        }
+
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
diff --git a/Rally/debug.keystore b/Rally/debug.keystore
new file mode 100644
index 0000000000..6024334a44
Binary files /dev/null and b/Rally/debug.keystore differ