Fixing readme misspelling

CHANGELOG.md

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 93c1caf..60de65d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,7 @@
 # Release 0.8.3 (xxxx-xx-xx)
 
 - Issue #198: Instead of stopping `glide install` for a hash failures providing
-  a warning. Failed hash check is currently too agressive.
+  a warning. Failed hash check is currently too aggressive.
 - Fixed #199: `glide up` on Windows unable to detect dependencies when GOPATH
   and GOROOT on a different drive or when GOROOT ends in a path separator.
 - Fixed #194: `glide up` stalling on Windows due to POSIX path separators and