diff --git a/compiler/ghc.cabal.in b/compiler/ghc.cabal.in
index 523f2d7bd197950a4fb90bae4ee715530cfd875a..012b5dabb64dc4ee4fb54a74e0754f0e1f79addf 100644
--- a/compiler/ghc.cabal.in
+++ b/compiler/ghc.cabal.in
@@ -105,7 +105,7 @@ Library
extra-libraries: zstd
CPP-Options: -DHAVE_LIBZSTD
- Build-Depends: base >= 4.11 && < 4.20,
+ Build-Depends: base >= 4.11 && < 4.21,
deepseq >= 1.4 && < 1.6,
directory >= 1 && < 1.4,
process >= 1 && < 1.7,
diff --git a/libraries/array b/libraries/array
index 4c9cc53ea0a76fcea3542391832f7f5bd95ace09..510456786715d96dfc9e9bc4cead9aace1ce2db6 160000
--- a/libraries/array
+++ b/libraries/array
@@ -1 +1 @@
-Subproject commit 4c9cc53ea0a76fcea3542391832f7f5bd95ace09
+Subproject commit 510456786715d96dfc9e9bc4cead9aace1ce2db6
diff --git a/libraries/base/base.cabal b/libraries/base/base.cabal
index e92dc068d4b237654e9f0087752eb65567a49f58..371fe5d8229c640b5f506da71c4a472689e7c742 100644
--- a/libraries/base/base.cabal
+++ b/libraries/base/base.cabal
@@ -1,6 +1,6 @@
cabal-version: 3.0
name: base
-version: 4.19.0.0
+version: 4.20.0.0
-- NOTE: Don't forget to update ./changelog.md
license: BSD-3-Clause
diff --git a/libraries/deepseq b/libraries/deepseq
index eb1eff5236d2a38e10f49e12301daa52ad20915b..09aed1bf774f2f05c8b390539ce35adf5cd68c30 160000
--- a/libraries/deepseq
+++ b/libraries/deepseq
@@ -1 +1 @@
-Subproject commit eb1eff5236d2a38e10f49e12301daa52ad20915b
+Subproject commit 09aed1bf774f2f05c8b390539ce35adf5cd68c30
diff --git a/libraries/directory b/libraries/directory
index fc38cbfc5c7c4b631ed89d6b41bbe00ee96c8b21..4b7c231d187cf253c5f446c4aed2fea26b81d5f9 160000
--- a/libraries/directory
+++ b/libraries/directory
@@ -1 +1 @@
-Subproject commit fc38cbfc5c7c4b631ed89d6b41bbe00ee96c8b21
+Subproject commit 4b7c231d187cf253c5f446c4aed2fea26b81d5f9
diff --git a/libraries/filepath b/libraries/filepath
index 4dd36add328032f9cbf0eff2a3511ab4369b18eb..87a09e296ea6fc137a0b32edda1bd0f54332642e 160000
--- a/libraries/filepath
+++ b/libraries/filepath
@@ -1 +1 @@
-Subproject commit 4dd36add328032f9cbf0eff2a3511ab4369b18eb
+Subproject commit 87a09e296ea6fc137a0b32edda1bd0f54332642e
diff --git a/libraries/ghc-boot-th/ghc-boot-th.cabal.in b/libraries/ghc-boot-th/ghc-boot-th.cabal.in
index 7cd949ccc620bfa89fa90534baf93283a900f915..309fc23bce768ac1c9946a12169762bb281b917d 100644
--- a/libraries/ghc-boot-th/ghc-boot-th.cabal.in
+++ b/libraries/ghc-boot-th/ghc-boot-th.cabal.in
@@ -36,4 +36,4 @@ Library
GHC.ForeignSrcLang.Type
GHC.Lexeme
- build-depends: base >= 4.7 && < 4.20
+ build-depends: base >= 4.7 && < 4.21
diff --git a/libraries/ghc-boot/ghc-boot.cabal.in b/libraries/ghc-boot/ghc-boot.cabal.in
index a0f250574ae4c282c34ea199cad12e3e570f0687..79caa3a9b5c683465d801841193e779d1a5d971b 100644
--- a/libraries/ghc-boot/ghc-boot.cabal.in
+++ b/libraries/ghc-boot/ghc-boot.cabal.in
@@ -73,7 +73,7 @@ Library
GHC.Version
GHC.Platform.Host
- build-depends: base >= 4.7 && < 4.20,
+ build-depends: base >= 4.7 && < 4.21,
binary == 0.8.*,
bytestring >= 0.10 && < 0.13,
containers >= 0.5 && < 0.8,
diff --git a/libraries/ghc-compact/ghc-compact.cabal b/libraries/ghc-compact/ghc-compact.cabal
index 228a8b82dcadabed7a10f939aa6abc1c55a7a6e2..ad524066b16a1e376d0acd3484d37b6ca66a0289 100644
--- a/libraries/ghc-compact/ghc-compact.cabal
+++ b/libraries/ghc-compact/ghc-compact.cabal
@@ -40,7 +40,7 @@ library
CPP
build-depends: ghc-prim >= 0.5.3 && < 0.11,
- base >= 4.9.0 && < 4.20,
+ base >= 4.9.0 && < 4.21,
bytestring >= 0.10.6.0 && <0.13
ghc-options: -Wall
diff --git a/libraries/ghc-experimental/ghc-experimental.cabal b/libraries/ghc-experimental/ghc-experimental.cabal
index 2899c894cbdcd986ac08d13ac95a2e77182d5314..45dc979cd6c182cf23a31e2ffb5ef849563dc5cf 100644
--- a/libraries/ghc-experimental/ghc-experimental.cabal
+++ b/libraries/ghc-experimental/ghc-experimental.cabal
@@ -30,7 +30,7 @@ library
if arch(wasm32)
exposed-modules: GHC.Wasm.Prim
other-extensions:
- build-depends: base ^>=4.19,
+ build-depends: base ^>=4.20,
ghc-internal >= 0.1 && < 0.2,
ghc-prim >= 0.10 && < 0.11
hs-source-dirs: src
diff --git a/libraries/ghci/ghci.cabal.in b/libraries/ghci/ghci.cabal.in
index f8f734014f6224a6b56de3ef03e4e37b4f8d9250..4aed5d888bff658fb7cd28c4a4c5ed0f3abfd900 100644
--- a/libraries/ghci/ghci.cabal.in
+++ b/libraries/ghci/ghci.cabal.in
@@ -75,7 +75,7 @@ library
Build-Depends:
rts,
array == 0.5.*,
- base >= 4.8 && < 4.20,
+ base >= 4.8 && < 4.21,
ghc-prim >= 0.5.0 && < 0.12,
binary == 0.8.*,
bytestring >= 0.10 && < 0.13,
diff --git a/libraries/haskeline b/libraries/haskeline
index ab2272336641195d0d087a6ccfd9bf511d208860..76157646fb5836fc022e770f7db2156661e899c3 160000
--- a/libraries/haskeline
+++ b/libraries/haskeline
@@ -1 +1 @@
-Subproject commit ab2272336641195d0d087a6ccfd9bf511d208860
+Subproject commit 76157646fb5836fc022e770f7db2156661e899c3
diff --git a/libraries/hpc b/libraries/hpc
index 496ff3b1a2d14a57ea9065099a4bb78ab8919170..8bf6f8b08b0d72cb9231775b66ca572acc1d3197 160000
--- a/libraries/hpc
+++ b/libraries/hpc
@@ -1 +1 @@
-Subproject commit 496ff3b1a2d14a57ea9065099a4bb78ab8919170
+Subproject commit 8bf6f8b08b0d72cb9231775b66ca572acc1d3197
diff --git a/libraries/os-string b/libraries/os-string
index 6c567f572e62437b8431b0f64b91393c40b677c8..8e13019854e1497cb83581bbcab25e763fcc4d4b 160000
--- a/libraries/os-string
+++ b/libraries/os-string
@@ -1 +1 @@
-Subproject commit 6c567f572e62437b8431b0f64b91393c40b677c8
+Subproject commit 8e13019854e1497cb83581bbcab25e763fcc4d4b
diff --git a/libraries/parsec b/libraries/parsec
index 4cc55b481b2eaf0606235522a6a340c10ca8dbba..4a44a8cdaa8c3eaa97a73a6da05940dd3bf7c93b 160000
--- a/libraries/parsec
+++ b/libraries/parsec
@@ -1 +1 @@
-Subproject commit 4cc55b481b2eaf0606235522a6a340c10ca8dbba
+Subproject commit 4a44a8cdaa8c3eaa97a73a6da05940dd3bf7c93b
diff --git a/libraries/process b/libraries/process
index dfdae0a7036b42d352a515214e6116424dd08ec9..a53f925e3ee246e2429418b7a088ecaa0976007b 160000
--- a/libraries/process
+++ b/libraries/process
@@ -1 +1 @@
-Subproject commit dfdae0a7036b42d352a515214e6116424dd08ec9
+Subproject commit a53f925e3ee246e2429418b7a088ecaa0976007b
diff --git a/libraries/semaphore-compat b/libraries/semaphore-compat
index 8cd32a85388c7b51786a7aedd15404e2e4896f1b..e8719d3b8e7e069b8f9200004b3d8a77446c91d3 160000
--- a/libraries/semaphore-compat
+++ b/libraries/semaphore-compat
@@ -1 +1 @@
-Subproject commit 8cd32a85388c7b51786a7aedd15404e2e4896f1b
+Subproject commit e8719d3b8e7e069b8f9200004b3d8a77446c91d3
diff --git a/libraries/stm b/libraries/stm
index 225162f792c7561b66ed9f05f2491915ac333b88..4e7aa7885b3f9724b19e68d12cbd2774b11b9bd0 160000
--- a/libraries/stm
+++ b/libraries/stm
@@ -1 +1 @@
-Subproject commit 225162f792c7561b66ed9f05f2491915ac333b88
+Subproject commit 4e7aa7885b3f9724b19e68d12cbd2774b11b9bd0
diff --git a/libraries/template-haskell/template-haskell.cabal.in b/libraries/template-haskell/template-haskell.cabal.in
index a303c1e5944ce42d6d724b56e833a3ed9a84ff97..d472178b62ec5703c46f1872c224a97b59ed4005 100644
--- a/libraries/template-haskell/template-haskell.cabal.in
+++ b/libraries/template-haskell/template-haskell.cabal.in
@@ -55,7 +55,7 @@ Library
Language.Haskell.TH.Lib.Map
build-depends:
- base >= 4.11 && < 4.20,
+ base >= 4.11 && < 4.21,
ghc-boot-th == @ProjectVersionMunged@,
ghc-prim,
pretty == 1.1.*
diff --git a/libraries/terminfo b/libraries/terminfo
index 4d26c55fb2f4af9649c318ef17abba13fbb214a4..500399a1497dfe1786ba67d6d2bfced4832f3fed 160000
--- a/libraries/terminfo
+++ b/libraries/terminfo
@@ -1 +1 @@
-Subproject commit 4d26c55fb2f4af9649c318ef17abba13fbb214a4
+Subproject commit 500399a1497dfe1786ba67d6d2bfced4832f3fed
diff --git a/libraries/unix b/libraries/unix
index 00bf6dd7a4a78f1d9d4fead303dc727e1055ffbd..930a8289f96c5353d120af4fd155446c574709f2 160000
--- a/libraries/unix
+++ b/libraries/unix
@@ -1 +1 @@
-Subproject commit 00bf6dd7a4a78f1d9d4fead303dc727e1055ffbd
+Subproject commit 930a8289f96c5353d120af4fd155446c574709f2
diff --git a/testsuite/tests/gadt/T19847a.stderr b/testsuite/tests/gadt/T19847a.stderr
index e37681df7f8f1a82d4d42d9a3340d6b65f99f81a..29c720d320f8a1e8a73e77524624b21547af39ba 100644
--- a/testsuite/tests/gadt/T19847a.stderr
+++ b/testsuite/tests/gadt/T19847a.stderr
@@ -9,4 +9,4 @@ DATA CONSTRUCTORS
(x ~ y, c ~ [x], Ord x) =>
x -> y -> T (x, y) b c
Dependent modules: []
-Dependent packages: [base-4.19.0.0]
+Dependent packages: [base-4.20.0.0]
diff --git a/utils/haddock b/utils/haddock
index 59bddf94eaab8d048924cc98d398c38e8035cf31..243fefaa40ddcc7c657a95e92f30cb79ec4ecb45 160000
--- a/utils/haddock
+++ b/utils/haddock
@@ -1 +1 @@
-Subproject commit 59bddf94eaab8d048924cc98d398c38e8035cf31
+Subproject commit 243fefaa40ddcc7c657a95e92f30cb79ec4ecb45
diff --git a/utils/hsc2hs b/utils/hsc2hs
index a6d9f73689ac51100ed7f6af0ea8cecd34422a91..b0b0cca3db42fc9bf8ebc7da8ddd6fa937c5aa25 160000
--- a/utils/hsc2hs
+++ b/utils/hsc2hs
@@ -1 +1 @@
-Subproject commit a6d9f73689ac51100ed7f6af0ea8cecd34422a91
+Subproject commit b0b0cca3db42fc9bf8ebc7da8ddd6fa937c5aa25