diff --git a/android-project/app/src/main/AndroidManifest.xml b/android-project/app/src/main/AndroidManifest.xml
index 8b575ace1e514..a288a689a0163 100644
--- a/android-project/app/src/main/AndroidManifest.xml
+++ b/android-project/app/src/main/AndroidManifest.xml
@@ -4,8 +4,8 @@
 -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="org.mamedev.mame"
-      android:versionCode="256"
-      android:versionName="0.256"
+      android:versionCode="257"
+      android:versionName="0.257"
       android:installLocation="auto">
 
     <!-- OpenGL ES 2.0 -->
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 5306b6a0912d7..0c4b9a54e3644 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -63,9 +63,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '0.256'
+version = '0.257'
 # The full version, including alpha/beta/rc tags.
-release = '0.256'
+release = '0.257'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/makefile b/makefile
index 1c612fbab739a..f81ca839d9761 100644
--- a/makefile
+++ b/makefile
@@ -1561,7 +1561,7 @@ endif
 
 ifeq (posix,$(SHELLTYPE))
 $(GENDIR)/version.cpp: makefile $(GENDIR)/git_desc | $(GEN_FOLDERS)
-	@echo '#define BARE_BUILD_VERSION "0.256"' > $@
+	@echo '#define BARE_BUILD_VERSION "0.257"' > $@
 	@echo '#define BARE_VCS_REVISION "$(NEW_GIT_VERSION)"' >> $@
 	@echo 'extern const char bare_build_version[];' >> $@
 	@echo 'extern const char bare_vcs_revision[];' >> $@
@@ -1571,7 +1571,7 @@ $(GENDIR)/version.cpp: makefile $(GENDIR)/git_desc | $(GEN_FOLDERS)
 	@echo 'const char build_version[] = BARE_BUILD_VERSION " (" BARE_VCS_REVISION ")";' >> $@
 else
 $(GENDIR)/version.cpp: makefile $(GENDIR)/git_desc | $(GEN_FOLDERS)
-	@echo #define BARE_BUILD_VERSION "0.256" > $@
+	@echo #define BARE_BUILD_VERSION "0.257" > $@
 	@echo #define BARE_VCS_REVISION "$(NEW_GIT_VERSION)" >> $@
 	@echo extern const char bare_build_version[]; >> $@
 	@echo extern const char bare_vcs_revision[]; >> $@