diff --git a/Changelog.md b/Changelog.md
--- a/Changelog.md
+++ b/Changelog.md
@@ -2,6 +2,9 @@
 
 ## Unreleased changes
 
+## v0.2.2.2
+- Bump the dependency for `process-1.6`.
+
 ## v0.2.2.1
 - Fix the case where types/constructors of oneofs overlap with those of
   submessages or subenums, by appending `"'"` to the former when required.
diff --git a/proto-lens-protoc.cabal b/proto-lens-protoc.cabal
--- a/proto-lens-protoc.cabal
+++ b/proto-lens-protoc.cabal
@@ -1,5 +1,5 @@
 name:                proto-lens-protoc
-version:             0.2.2.1
+version:             0.2.2.2
 synopsis:            Protocol buffer compiler for the proto-lens library.
 description:
   Turn protocol buffer files (.proto) into Haskell files (.hs) which
@@ -47,7 +47,7 @@
         , haskell-src-exts >= 1.17 && < 1.20
         , lens-family == 1.2.*
         , lens-labels == 0.1.*
-        , process >= 1.2 && < 1.5
+        , process >= 1.2 && < 1.7
         -- Specify a more precise version of `proto-lens`, since it depends on
         -- the exact definition of the Message class.
         , proto-lens == 0.2.2.*