diff --git a/package_llvm.py b/package_llvm.py
index 34f99bb..0556d82 100755
--- a/package_llvm.py
+++ b/package_llvm.py
@@ -17,9 +17,9 @@
 
 CHUNK_SIZE = 1024 * 1024 # 1MB
 
-LLVM_RELEASE_URL = 'http://releases.llvm.org/{version}'
+LLVM_RELEASE_URL = 'https://releases.llvm.org/{version}'
 LLVM_PRERELEASE_URL = (
-  'http://prereleases.llvm.org/{version}/rc{release_candidate}' )
+  'https://prereleases.llvm.org/{version}/rc{release_candidate}' )
 LLVM_SOURCE = 'llvm-{version}.src'
 CLANG_SOURCE = 'cfe-{version}.src'
 BUNDLE_NAME = 'clang+llvm-{version}-{target}'