diff --git a/CMakeLists.txt b/CMakeLists.txt
index 711e158288e..d9cf1ac8846 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -123,8 +123,8 @@ set(B64_INCLUDE "${B64_SRC}/include")
 set(B64_LIB "${B64_SRC}/src/libb64.a")
 ExternalProject_Add(
   b64
-  URL "https://github.com/libb64/libb64/archive/v1.2.1.zip"
-  URL_HASH "SHA256=665134c2b600098a7ebd3d00b6a866cb34909a6d48e0e37a0eda226a4ad2638a"
+  URL "https://github.com/libb64/libb64/archive/ce864b17ea0e24a91e77c7dd3eb2d1ac4175b3f0.tar.gz"
+  URL_HASH "SHA256=d07173e66f435e5c77dbf81bd9313f8d0e4a3b4edd4105a62f4f8132ba932811"
   CONFIGURE_COMMAND ""
   BUILD_COMMAND ${CMD_MAKE}
   BUILD_IN_SOURCE 1