diff --git a/ChangeLog.txt b/ChangeLog.txt
index ed8abfd..b1f76ec 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -1,3 +1,10 @@
+2020-01-18: Version 1.78
+- Update to Stockfish 11.
+- Add button action "Force computer move".
+- Don't try to fixup invalid e.p. square if the position is invalid.
+- Update translations.
+- Use less CPU while waiting for human player to move.
+
 2019-09-29: Version 1.77
 - Add a user manual.
 - Include link to source code in about/help dialog text.
diff --git a/DroidFishApp/build.gradle b/DroidFishApp/build.gradle
index b2e1b80..43b6c4c 100644
--- a/DroidFishApp/build.gradle
+++ b/DroidFishApp/build.gradle
@@ -6,8 +6,8 @@ android {
         applicationId "org.petero.droidfish"
         minSdkVersion 16
         targetSdkVersion 28
-        versionCode 87
-        versionName "1.77"
+        versionCode 88
+        versionName "1.78"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         externalNativeBuild {
             ndkBuild {