diff --git a/CHANGELOG.md b/CHANGELOG.md
index fdacbd98..20220f50 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@
 
 The espeak-ng project is a fork of the espeak project.
 
+### 1.52 (In Development)
+
 ### 1.51
 
 *  Add support for speechPlayer.
diff --git a/android/AndroidManifest.xml b/android/AndroidManifest.xml
index 9074bee6..c2a0ad99 100644
--- a/android/AndroidManifest.xml
+++ b/android/AndroidManifest.xml
@@ -2,7 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.reecedunn.espeak"
     android:versionCode="20"
-    android:versionName="1.51" >
+    android:versionName="1.52-dev" >
 
     <uses-feature
         android:name="android.hardware.touchscreen"
diff --git a/android/build.gradle b/android/build.gradle
index 40fff2eb..af62a513 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -30,7 +30,7 @@ android {
         minSdkVersion 14
         targetSdkVersion 26
         versionCode 20
-        versionName "1.51"
+        versionName "1.52-dev"
     }
 
     sourceSets {
diff --git a/android/jni/include/config.h b/android/jni/include/config.h
index 396eb79c..fe037512 100644
--- a/android/jni/include/config.h
+++ b/android/jni/include/config.h
@@ -1,2 +1,2 @@
 // This is created by autoconf on POSIX-compatibe build environments.
-#define PACKAGE_VERSION "1.51"
+#define PACKAGE_VERSION "1.52-dev"
diff --git a/configure.ac b/configure.ac
index 09e2cdc5..098bf601 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_PREREQ([2.63])
-AC_INIT([eSpeak NG], [1.51], [https://github.com/espeak-ng/espeak-ng/issues], [espeak-ng], [https://github.com/espeak-ng/espeak-ng])
+AC_INIT([eSpeak NG], [1.52-dev], [https://github.com/espeak-ng/espeak-ng/issues], [espeak-ng], [https://github.com/espeak-ng/espeak-ng])
 AM_INIT_AUTOMAKE()
 LT_INIT
 
diff --git a/src/windows/config.h b/src/windows/config.h
index 9b8f1dc4..77ab324f 100644
--- a/src/windows/config.h
+++ b/src/windows/config.h
@@ -9,4 +9,4 @@
 #define _CRT_NONSTDC_NO_DEPRECATE
 
 // This is created by autoconf on POSIX-compatibe build environments.
-#define PACKAGE_VERSION "1.51"
+#define PACKAGE_VERSION "1.52-dev"