diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
index 16ac18f..779aeea 100644
--- a/.github/workflows/haskell-ci.yml
+++ b/.github/workflows/haskell-ci.yml
@@ -8,9 +8,9 @@
 #
 # For more information, see https://github.com/andreasabel/haskell-ci
 #
-# version: 0.17.20230911
+# version: 0.17.20231002
 #
-# REGENDATA ("0.17.20230911",["github","microaeson.cabal"])
+# REGENDATA ("0.17.20231002",["github","microaeson.cabal"])
 #
 name: Haskell-CI
 on:
@@ -32,14 +32,14 @@ jobs:
     strategy:
       matrix:
         include:
-          - compiler: ghc-9.8.0.20230822
+          - compiler: ghc-9.8.0.20230929
             compilerKind: ghc
-            compilerVersion: 9.8.0.20230822
+            compilerVersion: 9.8.0.20230929
             setup-method: ghcup
             allow-failure: true
-          - compiler: ghc-9.6.2
+          - compiler: ghc-9.6.3
             compilerKind: ghc
-            compilerVersion: 9.6.2
+            compilerVersion: 9.6.3
             setup-method: ghcup
             allow-failure: false
           - compiler: ghc-9.4.7
@@ -77,6 +77,11 @@ jobs:
             compilerVersion: 8.4.4
             setup-method: hvr-ppa
             allow-failure: false
+          - compiler: ghc-8.2.2
+            compilerKind: ghc
+            compilerVersion: 8.2.2
+            setup-method: hvr-ppa
+            allow-failure: false
           - compiler: ghc-8.0.2
             compilerKind: ghc
             compilerVersion: 8.0.2
@@ -229,11 +234,10 @@ jobs:
           touch cabal.project
           touch cabal.project.local
           echo "packages: ${PKGDIR_microaeson}" >> cabal.project
-          if [ $((HCNUMVER >= 80400)) -ne 0 ] ; then echo "package microaeson" >> cabal.project ; fi
-          if [ $((HCNUMVER >= 80400)) -ne 0 ] ; then echo "    ghc-options: -Werror=missing-methods" >> cabal.project ; fi
+          if [ $((HCNUMVER >= 80200)) -ne 0 ] ; then echo "package microaeson" >> cabal.project ; fi
+          if [ $((HCNUMVER >= 80200)) -ne 0 ] ; then echo "    ghc-options: -Werror=missing-methods" >> cabal.project ; fi
           cat >> cabal.project <<EOF
-          allow-newer: bytestring
-          allow-newer: text
+          allow-newer: containers
           EOF
           if $HEADHACKAGE; then
           echo "allow-newer: $($HCPKG list --simple-output | sed -E 's/([a-zA-Z-]+)-[0-9.]+/*:\1,/g')" >> cabal.project
@@ -278,26 +282,13 @@ jobs:
       - name: prepare for constraint sets
         run: |
           rm -f cabal.project.local
-      - name: constraint set text-2.1-tests
-        run: |
-          if [ $((HCNUMVER >= 90800)) -ne 0 ] ; then $CABAL v2-build $ARG_COMPILER --enable-tests --disable-benchmarks --constraint='text ^>= 2.1' all --dry-run ; fi
-          if [ $((HCNUMVER >= 90800)) -ne 0 ] ; then cabal-plan topo | sort ; fi
-          if [ $((HCNUMVER >= 90800)) -ne 0 ] ; then $CABAL v2-build $ARG_COMPILER --enable-tests --disable-benchmarks --constraint='text ^>= 2.1' --dependencies-only -j2 all ; fi
-          if [ $((HCNUMVER >= 90800)) -ne 0 ] ; then $CABAL v2-build $ARG_COMPILER --enable-tests --disable-benchmarks --constraint='text ^>= 2.1' all ; fi
-          if [ $((HCNUMVER >= 90800)) -ne 0 ] ; then $CABAL v2-test $ARG_COMPILER --enable-tests --disable-benchmarks --constraint='text ^>= 2.1' all ; fi
-      - name: constraint set text-2.1
-        run: |
-          if [ $((HCNUMVER >= 80400 && HCNUMVER < 90800)) -ne 0 ] ; then $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks --constraint='text ^>= 2.1' all --dry-run ; fi
-          if [ $((HCNUMVER >= 80400 && HCNUMVER < 90800)) -ne 0 ] ; then cabal-plan topo | sort ; fi
-          if [ $((HCNUMVER >= 80400 && HCNUMVER < 90800)) -ne 0 ] ; then $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks --constraint='text ^>= 2.1' --dependencies-only -j2 all ; fi
-          if [ $((HCNUMVER >= 80400 && HCNUMVER < 90800)) -ne 0 ] ; then $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks --constraint='text ^>= 2.1' all ; fi
-      - name: constraint set bytestring-0.12
+      - name: constraint set containers-0.7
         run: |
-          if [ $((HCNUMVER >= 80400)) -ne 0 ] ; then $CABAL v2-build $ARG_COMPILER --enable-tests --disable-benchmarks --constraint='bytestring ^>= 0.12' --constraint='text < 2.1' all --dry-run ; fi
-          if [ $((HCNUMVER >= 80400)) -ne 0 ] ; then cabal-plan topo | sort ; fi
-          if [ $((HCNUMVER >= 80400)) -ne 0 ] ; then $CABAL v2-build $ARG_COMPILER --enable-tests --disable-benchmarks --constraint='bytestring ^>= 0.12' --constraint='text < 2.1' --dependencies-only -j2 all ; fi
-          if [ $((HCNUMVER >= 80400)) -ne 0 ] ; then $CABAL v2-build $ARG_COMPILER --enable-tests --disable-benchmarks --constraint='bytestring ^>= 0.12' --constraint='text < 2.1' all ; fi
-          if [ $((HCNUMVER >= 80400)) -ne 0 ] ; then $CABAL v2-test $ARG_COMPILER --enable-tests --disable-benchmarks --constraint='bytestring ^>= 0.12' --constraint='text < 2.1' all ; fi
+          if [ $((HCNUMVER >= 80200 && HCNUMVER < 90800)) -ne 0 ] ; then $CABAL v2-build $ARG_COMPILER --enable-tests --disable-benchmarks --constraint='containers ^>= 0.7' all --dry-run ; fi
+          if [ $((HCNUMVER >= 80200 && HCNUMVER < 90800)) -ne 0 ] ; then cabal-plan topo | sort ; fi
+          if [ $((HCNUMVER >= 80200 && HCNUMVER < 90800)) -ne 0 ] ; then $CABAL v2-build $ARG_COMPILER --enable-tests --disable-benchmarks --constraint='containers ^>= 0.7' --dependencies-only -j2 all ; fi
+          if [ $((HCNUMVER >= 80200 && HCNUMVER < 90800)) -ne 0 ] ; then $CABAL v2-build $ARG_COMPILER --enable-tests --disable-benchmarks --constraint='containers ^>= 0.7' all ; fi
+          if [ $((HCNUMVER >= 80200 && HCNUMVER < 90800)) -ne 0 ] ; then $CABAL v2-test $ARG_COMPILER --enable-tests --disable-benchmarks --constraint='containers ^>= 0.7' all ; fi
       - name: save cache
         uses: actions/cache/save@v3
         if: always()
diff --git a/cabal.haskell-ci b/cabal.haskell-ci
index 89d0b0f..1260b62 100644
--- a/cabal.haskell-ci
+++ b/cabal.haskell-ci
@@ -1,29 +1,38 @@
 branches: master
 
--- `allow-newer: text` breaks aeson in the GHC-8.2 build 
-enabled: < 8.2 || > 8.3
-
-constraint-set bytestring-0.12
-  ghc: >= 8.2
-  constraints: bytestring ^>= 0.12
-  constraints: text < 2.1
-    -- otherwise aeson fails to build
-  tests: True
-  run-tests: True
-
-constraint-set text-2.1
+constraint-set containers-0.7
   ghc: >= 8.2 && < 9.8
-  constraints: text ^>= 2.1
-  -- Cannot build aeson with text-2.1 atm (2023-08-31)
-  tests: False
-
-constraint-set text-2.1-tests
-  ghc: >= 9.8
-  constraints: text ^>= 2.1
+  constraints: containers ^>= 0.7
   tests: True
   run-tests: True
 
--- For constraint-sets
 raw-project
-  allow-newer: bytestring
-  allow-newer: text
+  allow-newer: containers
+
+-- -- `allow-newer: text` breaks aeson in the GHC-8.2 build
+-- enabled: < 8.2 || > 8.3
+--
+-- constraint-set bytestring-0.12
+--   ghc: >= 8.2
+--   constraints: bytestring ^>= 0.12
+--   constraints: text < 2.1
+--     -- otherwise aeson fails to build
+--   tests: True
+--   run-tests: True
+--
+-- constraint-set text-2.1
+--   ghc: >= 8.2 && < 9.8
+--   constraints: text ^>= 2.1
+--   -- Cannot build aeson with text-2.1 atm (2023-08-31)
+--   tests: False
+--
+-- constraint-set text-2.1-tests
+--   ghc: >= 9.8
+--   constraints: text ^>= 2.1
+--   tests: True
+--   run-tests: True
+--
+-- -- For constraint-sets
+-- raw-project
+--   allow-newer: bytestring
+--   allow-newer: text
diff --git a/microaeson.cabal b/microaeson.cabal
index 858a2e8..4a0ef2a 100644
--- a/microaeson.cabal
+++ b/microaeson.cabal
@@ -22,7 +22,7 @@ The API is designed in such a way to allow to easily convert client code written
 
 tested-with:
   GHC == 9.8.0
-  GHC == 9.6.2
+  GHC == 9.6.3
   GHC == 9.4.7
   GHC == 9.2.8
   GHC == 9.0.2
@@ -63,6 +63,7 @@ library
                    , bytestring  >= 0.10.6.0 && < 0.13
                    , containers ^>= 0.5.6.2
                              || ^>= 0.6.0.1
+                             || ^>= 0.7
                    , deepseq    ^>= 1.4.1.1
                              || ^>= 1.5.0.0
                    , fail       ^>= 4.9.0.0