diff --git a/hledger-lib/package.yaml b/hledger-lib/package.yaml
index 65ea7b028..784362e38 100644
--- a/hledger-lib/package.yaml
+++ b/hledger-lib/package.yaml
@@ -53,7 +53,7 @@ dependencies:
 - file-embed >=0.0.10
 - filepath
 - hashtables >=1.2.3.1
-- megaparsec >=7.0.0 && <9.4
+- megaparsec >=9.3 && <9.4
 - microlens >=0.4
 - microlens-th >=0.4
 - mtl >=2.2.1
diff --git a/hledger-ui/package.yaml b/hledger-ui/package.yaml
index f17fde23b..d248ebe9b 100644
--- a/hledger-ui/package.yaml
+++ b/hledger-ui/package.yaml
@@ -65,7 +65,7 @@ dependencies:
 - fsnotify >=0.4 && <0.5
 - microlens >=0.4
 - microlens-platform >=0.2.3.1
-- megaparsec >=7.0.0 && <9.4
+- megaparsec >=9.3 && <9.4
 - mtl >=2.2.1
 - process >=1.2
 - safe >=0.3.19
diff --git a/hledger-web/package.yaml b/hledger-web/package.yaml
index ff12860e2..3bff9bbd3 100644
--- a/hledger-web/package.yaml
+++ b/hledger-web/package.yaml
@@ -125,7 +125,7 @@ library:
   - http-conduit
   - http-client
   - http-types
-  - megaparsec >=7.0.0 && <9.4
+  - megaparsec >=9.3 && <9.4
   - mtl >=2.2.1
   - network
   - shakespeare >=2.0.2.2
diff --git a/hledger/package.yaml b/hledger/package.yaml
index 6df285892..8b5ce9ea5 100644
--- a/hledger/package.yaml
+++ b/hledger/package.yaml
@@ -111,7 +111,7 @@ dependencies:
 - filepath
 - githash >=0.1.6.2
 - haskeline >=0.6
-- megaparsec >=7.0.0 && <9.4
+- megaparsec >=9.3 && <9.4
 - microlens >=0.4
 - mtl >=2.2.1
 - process
diff --git a/stack.yaml b/stack.yaml
index 6c60f57cb..e84b34363 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -10,6 +10,7 @@ packages:
 
 extra-deps:
 # for hledger-lib:
+- megaparsec-9.3.0
 # - breakpoint-0.1.2.0
 # for hledger:
 # for hledger-ui: