diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
-## [_Unreleased_](https://github.com/freckle/hspec-junit-formatter/compare/v1.1.0.0...main)
+## [_Unreleased_](https://github.com/freckle/hspec-junit-formatter/compare/v1.1.0.1...main)
 
 None
+
+## [v1.1.0.1](https://github.com/freckle/hspec-junit-formatter/compare/v1.1.0.0...v1.1.0.1)
+
+- Release with looser lower-bounds
+- CI against older GHCs
 
 ## [v1.1.0.0](https://github.com/freckle/hspec-junit-formatter/compare/v1.0.3.0...v1.1.0.0)
 
diff --git a/hspec-junit-formatter.cabal b/hspec-junit-formatter.cabal
--- a/hspec-junit-formatter.cabal
+++ b/hspec-junit-formatter.cabal
@@ -1,6 +1,6 @@
 cabal-version:      1.12
 name:               hspec-junit-formatter
-version:            1.1.0.0
+version:            1.1.0.1
 license:            MIT
 license-file:       LICENSE
 copyright:          2021 Renaissance Learning Inc
@@ -46,17 +46,18 @@
         TypeApplications TypeFamilies
 
     build-depends:
-        base >=4.14.1.0 && <5,
-        conduit >=1.3.4.1,
-        containers >=0.6.2.1,
-        directory >=1.3.6.0,
-        exceptions >=0.10.4,
-        filepath >=1.4.2.1,
+        base >=4.11.1.0 && <5,
+        conduit >=1.3.1,
+        containers >=0.5.11.0,
+        directory >=1.3.1.5,
+        exceptions >=0.10.0,
+        filepath >=1.4.2,
         hspec-core >=2.8.1,
-        text >=1.2.4.1,
-        time >=1.9.3,
-        xml-conduit >=1.9.1.1,
-        xml-types >=0.3.8
+        iso8601-time >=0.1.5,
+        text >=1.2.3.1,
+        time >=1.8.0.2,
+        xml-conduit >=1.8.0.1,
+        xml-types >=0.3.6
 
 test-suite readme
     type:               exitcode-stdio-1.0
@@ -74,11 +75,11 @@
 
     ghc-options:        -pgmL markdown-unlit
     build-depends:
-        base >=4.14.1.0 && <5,
+        base >=4.11.1.0 && <5,
         hspec >=2.8.1,
         hspec-core >=2.8.1,
         hspec-junit-formatter -any,
-        markdown-unlit >=0.5.1
+        markdown-unlit >=0.5.0
 
 test-suite spec
     type:               exitcode-stdio-1.0
@@ -100,11 +101,11 @@
 
     ghc-options:        -threaded -rtsopts -O0 -with-rtsopts=-N
     build-depends:
-        base >=4.14.1.0 && <5,
-        containers >=0.6.2.1,
-        filepath >=1.4.2.1,
+        base >=4.11.1.0 && <5,
+        containers >=0.5.11.0,
+        filepath >=1.4.2,
         hspec >=2.8.1,
         hspec-junit-formatter -any,
         temporary >=1.3,
-        text >=1.2.4.1,
-        xml-conduit >=1.9.1.1
+        text >=1.2.3.1,
+        xml-conduit >=1.8.0.1
diff --git a/library/Test/Hspec/JUnit/Render.hs b/library/Test/Hspec/JUnit/Render.hs
--- a/library/Test/Hspec/JUnit/Render.hs
+++ b/library/Test/Hspec/JUnit/Render.hs
@@ -9,7 +9,7 @@
 import qualified Data.Conduit.List as CL
 import Data.Foldable (traverse_)
 import Data.Text (Text, pack)
-import Data.Time.Format.ISO8601 (iso8601Show)
+import Data.Time.ISO8601 (formatISO8601)
 import Data.XML.Types (Event)
 import Test.Hspec.JUnit.Schema
   (Location(..), Result(..), Suite(..), Suites(..), TestCase(..))
@@ -37,7 +37,7 @@
       <> attr "package" suiteName
       <> attr "id" (tshow i)
       <> attr "time" (roundToStr $ sumDurations suiteCases)
-      <> attr "timestamp" (pack $ iso8601Show suiteTimestamp)
+      <> attr "timestamp" (pack $ formatISO8601 suiteTimestamp)
       <> attr "hostname" "localhost"
       <> attr "tests" (tshow $ length suiteCases)
       <> attr