diff --git a/win32/build/libs_version.txt b/win32/build/libs_version.txt
index 123a75d7830..44420ddec82 100644
--- a/win32/build/libs_version.txt
+++ b/win32/build/libs_version.txt
@@ -1,12 +1,11 @@
 bz2-1.0.6
 cclient-2007f
 freetype-2.4.10
-icu-50.1.2
+icu-51.2
 jpeglib-9
 libcurl-7.30.0
 libiconv-1.14
 libmcrypt-2.5.8
-libmpir-2.5.1
 libmpir-2.6.0
 libpng-1.5.14
 libpq-9.2.2