diff --git a/r2-navigator/build.gradle b/r2-navigator/build.gradle
index 89c88e64..9688c169 100644
--- a/r2-navigator/build.gradle
+++ b/r2-navigator/build.gradle
@@ -40,7 +40,7 @@ dependencies {
     if (findProject(':r2-shared')) {
         implementation project(':r2-shared')
     } else {
-        implementation "com.github.readium:r2-shared-kotlin:1.1.3"
+        implementation "com.github.readium:r2-shared-kotlin:1.1.4"
     }
     implementation "androidx.appcompat:appcompat:1.1.0-rc01"
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
@@ -59,7 +59,7 @@ dependencies {
     implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.1.1'
     implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.1.1'
 
-    implementation 'org.zeroturnaround:zt-zip:1.12'
+    implementation 'org.zeroturnaround:zt-zip:1.13'
 
     implementation 'org.jsoup:jsoup:1.11.2'