diff --git a/Changelog.md b/Changelog.md
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,3 +1,7 @@
+### 0.4.7.0
+
+- Derive *TimeInterval* from *Eq*.
+
 ### 0.4.6.0
 
 - Added function *workerProcessIsExiting* to check quickly in an exception
diff --git a/NgxExport/Tools.hs b/NgxExport/Tools.hs
--- a/NgxExport/Tools.hs
+++ b/NgxExport/Tools.hs
@@ -145,7 +145,7 @@
                   | Sec Int         -- ^ Seconds
                   | HrMin Int Int   -- ^ Hours and minutes
                   | MinSec Int Int  -- ^ Minutes and seconds
-                  deriving (Generic, Lift, Read, Show)
+                  deriving (Generic, Lift, Read, Show, Eq)
 instance FromJSON TimeInterval
 
 -- | Converts a time interval into seconds.
diff --git a/ngx-export-tools.cabal b/ngx-export-tools.cabal
--- a/ngx-export-tools.cabal
+++ b/ngx-export-tools.cabal
@@ -1,5 +1,5 @@
 name:                       ngx-export-tools
-version:                    0.4.6.0
+version:                    0.4.7.0
 synopsis:                   Extra tools for Nginx haskell module
 description:                Extra tools for
         <http://github.com/lyokha/nginx-haskell-module Nginx haskell module>.