diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8ba113d..539b05f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Revision history for SJW
 
+## 0.1.2.3 -- 2021-01-20
+
+* Ensure compilation on Nix as far as 18.09
+
 ## 0.1.2.2 -- 2020-12-08
 
 * Add tests and a benchmark
diff --git a/SJW.cabal b/SJW.cabal
index 5abe793..1b29d06 100644
--- a/SJW.cabal
+++ b/SJW.cabal
@@ -3,7 +3,7 @@ cabal-version:       >=1.10
 -- further documentation, see http://haskell.org/cabal/users-guide/
 
 name:                SJW
-version:             0.1.2.2
+version:             0.1.2.3
 synopsis:            The Simple Javascript Wrench
 description:
   SJW is a very simple tool to pack several JS «modules» into a single script.
@@ -31,13 +31,13 @@ library
                      , SJW.Source
   build-depends:       attoparsec >= 0.13.2 && < 0.14
                      , base >=4.9 && <4.15
-                     , containers >= 0.6.0 && < 0.7
-                     , directory >= 1.3.3 && < 1.4
+                     , containers >= 0.5.0 && < 0.7
+                     , directory >= 1.2.0 && < 1.4
                      , filepath >= 1.4.2 && < 1.5
                      , mtl >= 2.2.2 && < 2.3
                      , random >= 1.1 && < 1.3
                      , text >= 1.2.3 && < 1.3
-                     , time >= 1.9.0 && < 1.12
+                     , time >= 1.8.0 && < 1.12
                      , unix >= 2.7.2 && < 2.8
   hs-source-dirs:      src
   default-language:    Haskell2010
@@ -49,7 +49,7 @@ executable sjw
   -- other-extensions:
   build-depends:       attoparsec
                      , base
-                     , optparse-applicative >= 0.15 && < 0.17
+                     , optparse-applicative >= 0.14 && < 0.17
                      , SJW
                      , text
   default-language:    Haskell2010