diff --git a/appveyor.yml b/appveyor.yml
index f272ff6c..83846939 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: 1.0.20.{build}
+version: 1.0.21.{build}
 
 os: Visual Studio 2017
 
diff --git a/builds/msvc/resource.rc b/builds/msvc/resource.rc
index 51d9b7fd..3e862d41 100644
--- a/builds/msvc/resource.rc
+++ b/builds/msvc/resource.rc
@@ -4,8 +4,8 @@
 #include "windows.h"
 
 //specify the version numbers for the dll's
-#define LIBSODIUM_VERSION_STRING "1.0.20.0"
-#define LIBSODIUM_VERSION_BIN 1,0,20,0
+#define LIBSODIUM_VERSION_STRING "1.0.21.0"
+#define LIBSODIUM_VERSION_BIN 1,0,21,0
 
 //specify the product name for the dlls based on the platform we are compiling for
 #if defined(x64)
diff --git a/builds/msvc/version.h b/builds/msvc/version.h
index c240fa91..9bc8dd3c 100644
--- a/builds/msvc/version.h
+++ b/builds/msvc/version.h
@@ -4,7 +4,7 @@
 
 #include "export.h"
 
-#define SODIUM_VERSION_STRING "1.0.20"
+#define SODIUM_VERSION_STRING "1.0.21"
 
 #define SODIUM_LIBRARY_VERSION_MAJOR 28
 #define SODIUM_LIBRARY_VERSION_MINOR 0
diff --git a/ci/appveyor/msvc-scripts/process.bat b/ci/appveyor/msvc-scripts/process.bat
index 963d7515..2169caa4 100755
--- a/ci/appveyor/msvc-scripts/process.bat
+++ b/ci/appveyor/msvc-scripts/process.bat
@@ -1,4 +1,4 @@
-cscript msvc-scripts/rep.vbs //Nologo s/@VERSION@/1.0.20/ < ..\..\src\libsodium\include\sodium\version.h.in > tmp
+cscript msvc-scripts/rep.vbs //Nologo s/@VERSION@/1.0.21/ < ..\..\src\libsodium\include\sodium\version.h.in > tmp
 cscript msvc-scripts/rep.vbs //Nologo s/@SODIUM_LIBRARY_VERSION_MAJOR@/28/ < tmp > tmp2
 cscript msvc-scripts/rep.vbs //Nologo s/@SODIUM_LIBRARY_VERSION_MINOR@/0/ < tmp2 > tmp3
 cscript msvc-scripts/rep.vbs //Nologo s/@SODIUM_LIBRARY_MINIMAL_DEF@// < tmp3 > ..\..\src\libsodium\include\sodium\version.h
diff --git a/configure.ac b/configure.ac
index e792f671..b6b86fea 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_PREREQ([2.69])
-AC_INIT([libsodium],[1.0.20],[https://github.com/jedisct1/libsodium/issues],[libsodium],[https://libsodium.org])
+AC_INIT([libsodium],[1.0.21],[https://github.com/jedisct1/libsodium/issues],[libsodium],[https://libsodium.org])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_SRCDIR([src/libsodium/sodium/version.c])
diff --git a/dist-build/android-aar.sh b/dist-build/android-aar.sh
index 49f14598..2aa10566 100755
--- a/dist-build/android-aar.sh
+++ b/dist-build/android-aar.sh
@@ -5,7 +5,7 @@
 # The x86 static library will not work due to text relocation rules, so static x86 versions are limited to shared libraries.
 # To simplify linking, library variants have distinct names: sodium, sodium-static, sodium-minimal and sodium-minimal-static.
 
-SODIUM_VERSION="1.0.20.0"
+SODIUM_VERSION="1.0.21.0"
 NDK_VERSION=$(grep "Pkg.Revision = " <"${ANDROID_NDK_HOME}/source.properties" | cut -f 2 -d '=' | cut -f 2 -d' ' | cut -f 1 -d'.')
 DEST_PATH=$(mktemp -d)
 
diff --git a/packaging/dotnet-core/libsodium.pkgproj b/packaging/dotnet-core/libsodium.pkgproj
index 757dd172..57469634 100644
--- a/packaging/dotnet-core/libsodium.pkgproj
+++ b/packaging/dotnet-core/libsodium.pkgproj
@@ -9,7 +9,7 @@
 
   <PropertyGroup>
     <PackageId>libsodium</PackageId>
-    <Version>1.0.20.0</Version>
+    <Version>1.0.21.0</Version>
     <Authors>Frank Denis</Authors>
     <Description>Internal implementation package not meant for direct consumption. Please do not reference directly.</Description>
     <Copyright>&#169; $([System.DateTime]::UtcNow.ToString(yyyy)) Frank Denis</Copyright>