Update TULSI_VERSION_COPYRIGHT.

PiperOrigin-RevId: 182392120
diff --git a/src/XcodeConfig/TulsiVersion.xcconfig b/src/XcodeConfig/TulsiVersion.xcconfig
index 046abd3..f2c72c3 100644
--- a/src/XcodeConfig/TulsiVersion.xcconfig
+++ b/src/XcodeConfig/TulsiVersion.xcconfig
@@ -11,7 +11,7 @@
 TULSI_VERSION_FIXLEVEL = 182259871
 TULSI_VERSION_BUILDNUMBER = 20180117
 
-TULSI_VERSION_COPYRIGHT = 2015-2017
+TULSI_VERSION_COPYRIGHT = 2015-2018
 
 TULSI_PRODUCT_NAME = $(PROJECT_NAME)