diff --git a/protoc-bundled-plugin/pom.xml b/protoc-bundled-plugin/pom.xml
index a1e65c9..5b31fd0 100644
--- a/protoc-bundled-plugin/pom.xml
+++ b/protoc-bundled-plugin/pom.xml
@@ -244,6 +244,33 @@
                   <type>exe</type>
                   <classifier>3.0.0-win32-x86</classifier>
                 </artifact>
+
+                <!-- 3.3.0 -->
+                <artifact>
+                  <file>src/main/binaries/3.3.0/protoc-3.3.0-linux-x86</file>
+                  <type>exe</type>
+                  <classifier>3.3.0-linux-x86</classifier>
+                </artifact>
+                <artifact>
+                  <file>src/main/binaries/3.3.0/protoc-3.3.0-linux-x86_64</file>
+                  <type>exe</type>
+                  <classifier>3.3.0-linux-x86_64</classifier>
+                </artifact>
+                <artifact>
+                  <file>src/main/binaries/3.3.0/protoc-3.3.0-mac_os_x-x86</file>
+                  <type>exe</type>
+                  <classifier>3.3.0-mac_os_x-x86</classifier>
+                </artifact>
+                <artifact>
+                  <file>src/main/binaries/3.3.0/protoc-3.3.0-mac_os_x-x86_64</file>
+                  <type>exe</type>
+                  <classifier>3.3.0-mac_os_x-x86_64</classifier>
+                </artifact>
+                <artifact>
+                  <file>src/main/binaries/3.3.0/protoc-3.3.0-win32-x86.exe</file>
+                  <type>exe</type>
+                  <classifier>3.3.0-win32-x86</classifier>
+                </artifact>
               </artifacts>
             </configuration>
           </execution>
diff --git a/protoc-bundled-plugin/src/main/binaries/3.3.0/protoc-3.3.0-linux-x86 b/protoc-bundled-plugin/src/main/binaries/3.3.0/protoc-3.3.0-linux-x86
new file mode 100755
index 0000000..46f6de6
Binary files /dev/null and b/protoc-bundled-plugin/src/main/binaries/3.3.0/protoc-3.3.0-linux-x86 differ
diff --git a/protoc-bundled-plugin/src/main/binaries/3.3.0/protoc-3.3.0-linux-x86_64 b/protoc-bundled-plugin/src/main/binaries/3.3.0/protoc-3.3.0-linux-x86_64
new file mode 100755
index 0000000..74aacb0
Binary files /dev/null and b/protoc-bundled-plugin/src/main/binaries/3.3.0/protoc-3.3.0-linux-x86_64 differ
diff --git a/protoc-bundled-plugin/src/main/binaries/3.3.0/protoc-3.3.0-mac_os_x-x86 b/protoc-bundled-plugin/src/main/binaries/3.3.0/protoc-3.3.0-mac_os_x-x86
new file mode 100755
index 0000000..a148729
Binary files /dev/null and b/protoc-bundled-plugin/src/main/binaries/3.3.0/protoc-3.3.0-mac_os_x-x86 differ
diff --git a/protoc-bundled-plugin/src/main/binaries/3.3.0/protoc-3.3.0-mac_os_x-x86_64 b/protoc-bundled-plugin/src/main/binaries/3.3.0/protoc-3.3.0-mac_os_x-x86_64
new file mode 100755
index 0000000..11775c0
Binary files /dev/null and b/protoc-bundled-plugin/src/main/binaries/3.3.0/protoc-3.3.0-mac_os_x-x86_64 differ
diff --git a/protoc-bundled-plugin/src/main/binaries/3.3.0/protoc-3.3.0-win32-x86.exe b/protoc-bundled-plugin/src/main/binaries/3.3.0/protoc-3.3.0-win32-x86.exe
new file mode 100644
index 0000000..d0cbf23
Binary files /dev/null and b/protoc-bundled-plugin/src/main/binaries/3.3.0/protoc-3.3.0-win32-x86.exe differ
diff --git a/protoc-bundled-plugin/tools/fetch-new-protoc.sh b/protoc-bundled-plugin/tools/fetch-new-protoc.sh
new file mode 100755
index 0000000..6f4d0da
--- /dev/null
+++ b/protoc-bundled-plugin/tools/fetch-new-protoc.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# May be used to fetch a new version of the protoc binaries.
+
+set -e
+
+export PB_VERSION=3.3.0
+export BUNDLE_BIN_DIR="$PWD"/protoc-bundled-plugin/src/main/binaries/"$PB_VERSION"
+
+echo "Fetching $PB_VERSION into $BUNDLE_BIN_DIR"
+
+if ! [ -d "$(dirname "$BUNDLE_BIN_DIR")" ]; then
+  echo "$0 must be run from project root"
+  exit 1
+fi
+
+mkdir -p "$BUNDLE_BIN_DIR"
+
+curl -L -O https://github.com/google/protobuf/releases/download/v"$PB_VERSION"/protoc-"$PB_VERSION"-linux-x86_32.zip
+curl -L -O https://github.com/google/protobuf/releases/download/v"$PB_VERSION"/protoc-"$PB_VERSION"-linux-x86_64.zip
+curl -L -O https://github.com/google/protobuf/releases/download/v"$PB_VERSION"/protoc-"$PB_VERSION"-osx-x86_64.zip
+curl -L -O https://github.com/google/protobuf/releases/download/v"$PB_VERSION"/protoc-"$PB_VERSION"-osx-x86_32.zip
+curl -L -O https://github.com/google/protobuf/releases/download/v"$PB_VERSION"/protoc-"$PB_VERSION"-win32.zip
+
+unzip -p protoc-"$PB_VERSION"-linux-x86_32.zip bin/protoc \
+  > "$BUNDLE_BIN_DIR"/protoc-"$PB_VERSION"-linux-x86
+unzip -p protoc-"$PB_VERSION"-linux-x86_64.zip bin/protoc \
+  > "$BUNDLE_BIN_DIR"/protoc-"$PB_VERSION"-linux-x86_64
+unzip -p protoc-"$PB_VERSION"-osx-x86_64.zip bin/protoc \
+  > "$BUNDLE_BIN_DIR"/protoc-"$PB_VERSION"-mac_os_x-x86_64
+unzip -p protoc-"$PB_VERSION"-osx-x86_32.zip bin/protoc \
+  > "$BUNDLE_BIN_DIR"/protoc-"$PB_VERSION"-mac_os_x-x86
+unzip -p protoc-"$PB_VERSION"-win32.zip bin/protoc.exe \
+  > "$BUNDLE_BIN_DIR"/protoc-"$PB_VERSION"-win32-x86.exe
+
+chmod +x "$BUNDLE_BIN_DIR"/protoc-*
+chmod -x "$BUNDLE_BIN_DIR"/protoc-*.exe
+
+rm *.zip
+
+echo Do not forget to update the POM to add '<artifact>' entries for
+echo the new binaries.