diff --git a/hledger-lib/package.yaml b/hledger-lib/package.yaml
index ae3805508..74e2675dd 100644
--- a/hledger-lib/package.yaml
+++ b/hledger-lib/package.yaml
@@ -21,7 +21,7 @@ github: simonmichael/hledger
 homepage: http://hledger.org
 bug-reports: http://bugs.hledger.org
 stability: stable
-tested-with: GHC==8.0.2, GHC==8.2.2, GHC==8.4.4, GHC==8.6.5, GHC==8.8.3, GHC==8.10.0.20200123
+tested-with: GHC==8.2.2, GHC==8.4.4, GHC==8.6.5, GHC==8.8.4, GHC==8.10.4
 
 extra-source-files:
 - CHANGES.md
@@ -32,7 +32,7 @@ extra-source-files:
 #data-files:
 
 dependencies:
-- base >=4.9 && <4.16
+- base >=4.10.1.0 && <4.16
 - base-compat-batteries >=0.10.1 && <0.12
 - aeson >=1
 - aeson-pretty
diff --git a/hledger-ui/package.yaml b/hledger-ui/package.yaml
index e871a24f8..c9d2f72d4 100644
--- a/hledger-ui/package.yaml
+++ b/hledger-ui/package.yaml
@@ -21,7 +21,7 @@ github      : simonmichael/hledger
 homepage    : http://hledger.org
 bug-reports : http://bugs.hledger.org
 stability   : stable
-tested-with: GHC==8.0.2, GHC==8.2.2, GHC==8.4.4, GHC==8.6.5, GHC==8.8.3, GHC==8.10.0.20200123
+tested-with: GHC==8.2.2, GHC==8.4.4, GHC==8.6.5, GHC==8.8.4, GHC==8.10.4
 
 extra-source-files:
   - CHANGES.md
@@ -45,7 +45,7 @@ dependencies:
 - hledger >=1.21.99 && <1.22
 - ansi-terminal >=0.9
 - async
-- base >=4.9 && <4.16
+- base >=4.10.1.0 && <4.16
 - base-compat-batteries >=0.10.1 && <0.12
 - cmdargs >=0.8
 - containers >=0.5.9
diff --git a/hledger-web/package.yaml b/hledger-web/package.yaml
index 21c4125c0..d878f4c42 100644
--- a/hledger-web/package.yaml
+++ b/hledger-web/package.yaml
@@ -22,9 +22,7 @@ github: simonmichael/hledger
 homepage: http://hledger.org
 bug-reports: http://bugs.hledger.org
 stability: stable
-tested-with: GHC==8.2.2, GHC==8.4.4, GHC==8.6.5, GHC==8.8.3, GHC==8.10.0.20200123
-# hledger-web is still GHC 8.0.2 compatible, but I haven't found an
-# install plan where all deps build
+tested-with: GHC==8.2.2, GHC==8.4.4, GHC==8.6.5, GHC==8.8.4, GHC==8.10.4
 
 extra-source-files:
 - CHANGES.md
@@ -104,7 +102,7 @@ library:
   - hledger-lib >=1.21.99 && <1.22
   - hledger >=1.21.99 && <1.22
   - aeson >=1
-  - base >=4.9 && <4.16
+  - base >=4.10.1.0 && <4.16
   - blaze-html
   - blaze-markup
   - bytestring
diff --git a/hledger/package.yaml b/hledger/package.yaml
index 21c36b414..c989d3586 100644
--- a/hledger/package.yaml
+++ b/hledger/package.yaml
@@ -21,7 +21,7 @@ github: simonmichael/hledger
 homepage: http://hledger.org
 bug-reports: http://bugs.hledger.org
 stability: stable
-tested-with: GHC==8.0.2, GHC==8.2.2, GHC==8.4.4, GHC==8.6.5, GHC==8.8.3, GHC==8.10.0.20200123
+tested-with: GHC==8.2.2, GHC==8.4.4, GHC==8.6.5, GHC==8.8.4, GHC==8.10.4
 
 extra-source-files:
 - CHANGES.md
@@ -98,7 +98,7 @@ dependencies:
 - hledger-lib >=1.21.99 && <1.22
 - aeson >=1
 - ansi-terminal >=0.9
-- base >=4.9 && <4.16
+- base >=4.10.1.0 && <4.16
 - base-compat-batteries >=0.10.1 && <0.12
 - bytestring
 - cmdargs >=0.10