diff --git a/CHANGES.txt b/CHANGES.txt
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,5 +1,7 @@
 Changelog for Weeder
 
+1.0.2, released 2018-03-01
+    Add lower bounds for Yaml and Aeson
 1.0.1, released 2018-02-23
     #34, support -any for version numbers
 1.0, released 2018-01-22
diff --git a/weeder.cabal b/weeder.cabal
--- a/weeder.cabal
+++ b/weeder.cabal
@@ -1,7 +1,7 @@
 cabal-version:      >= 1.18
 build-type:         Simple
 name:               weeder
-version:            1.0.1
+version:            1.0.2
 license:            BSD3
 license-file:       LICENSE
 category:           Development
@@ -39,8 +39,8 @@
         deepseq,
         filepath,
         cmdargs,
-        aeson,
-        yaml,
+        yaml >= 0.5.0,
+        aeson >= 1.1.2.0,
         bytestring,
         foundation >= 0.0.13,
         process >= 1.2.3.0,