diff --git a/stack9.0.yaml b/stack9.0.yaml
index 3bb1e2afc..2dfee801c 100644
--- a/stack9.0.yaml
+++ b/stack9.0.yaml
@@ -13,6 +13,7 @@ packages:
 - hledger-web
 
 extra-deps:
+- base-compat-0.14.0
 - megaparsec-9.3.0
 - safe-0.3.21
 # for hledger-lib:
diff --git a/stack9.2.yaml b/stack9.2.yaml
index 44ec291de..433c1e251 100644
--- a/stack9.2.yaml
+++ b/stack9.2.yaml
@@ -9,6 +9,7 @@ packages:
 - hledger-web
 
 extra-deps:
+- base-compat-0.14.0
 - megaparsec-9.3.0
 - safe-0.3.21
 # for hledger-lib:
diff --git a/stack9.4.yaml b/stack9.4.yaml
index 9a2bec054..d2a3c0f59 100644
--- a/stack9.4.yaml
+++ b/stack9.4.yaml
@@ -9,6 +9,7 @@ packages:
 - hledger-web
 
 extra-deps:
+- base-compat-0.14.0
 - safe-0.3.21
 - brick-2.3.1
 - vty-6.2
diff --git a/stack9.6.yaml b/stack9.6.yaml
index 26542925f..3968045aa 100644
--- a/stack9.6.yaml
+++ b/stack9.6.yaml
@@ -9,6 +9,7 @@ packages:
 - hledger-web
 
 extra-deps:
+- base-compat-0.14.0
 - vty-windows-0.2.0.1   # not yet in stackage
 
 nix:
diff --git a/stack9.8.yaml b/stack9.8.yaml
index 383169390..f622a633f 100644
--- a/stack9.8.yaml
+++ b/stack9.8.yaml
@@ -9,6 +9,7 @@ packages:
 - hledger-web
 
 extra-deps:
+- base-compat-0.14.0
 # needed only for dev builds when the debug flag is enabled:
 - ghc-debug-convention-0.6.0.0
 - ghc-debug-stub-0.6.0.0