diff --git a/hledger-ui/hledger-ui.cabal b/hledger-ui/hledger-ui.cabal
index 6dbe423f7..afa0adde9 100644
--- a/hledger-ui/hledger-ui.cabal
+++ b/hledger-ui/hledger-ui.cabal
@@ -57,8 +57,8 @@ executable hledger-ui
   ghc-options: -Wall -fno-warn-unused-do-bind -fno-warn-name-shadowing -fno-warn-missing-signatures -fno-warn-type-defaults -fno-warn-orphans
   cpp-options: -DVERSION="1.0.2"
   build-depends:
-      hledger >= 1.0.1
-    , hledger-lib >= 1.0.1
+      hledger >= 1.0.1 && < 1.1
+    , hledger-lib >= 1.0.1 && < 1.1
     , ansi-terminal >= 0.6.2.3 && < 0.7
     , base >= 3 && < 5
     , base-compat >= 0.8.1
diff --git a/hledger-ui/package.yaml b/hledger-ui/package.yaml
index 9c6bd7284..cbd70e4f6 100644
--- a/hledger-ui/package.yaml
+++ b/hledger-ui/package.yaml
@@ -48,8 +48,8 @@ executables:
       -fno-warn-type-defaults
       -fno-warn-orphans
     dependencies:
-      - hledger >= 1.0.1
-      - hledger-lib >= 1.0.1
+      - hledger >= 1.0.1 && < 1.1
+      - hledger-lib >= 1.0.1 && < 1.1
       - ansi-terminal >= 0.6.2.3 && < 0.7
       - base >= 3 && < 5
       - base-compat >= 0.8.1
diff --git a/hledger-web/hledger-web.cabal b/hledger-web/hledger-web.cabal
index c22a5b3be..a1e4b255e 100644
--- a/hledger-web/hledger-web.cabal
+++ b/hledger-web/hledger-web.cabal
@@ -127,8 +127,8 @@ library
     ghc-options: -Wall -fno-warn-unused-do-bind -fno-warn-name-shadowing -fno-warn-missing-signatures -fno-warn-type-defaults -fno-warn-orphans
     cpp-options: -DVERSION="1.0.1"
     build-depends:
-          hledger-lib >= 1.0.1
-        , hledger >= 1.0.1
+          hledger-lib >= 1.0.1 && < 1.1
+        , hledger >= 1.0.1 && < 1.1
         , base >=4 && <5
         , base-compat >=0.8.1
         , blaze-html
@@ -201,8 +201,8 @@ executable hledger-web
     ghc-options: -Wall -fno-warn-unused-do-bind -fno-warn-name-shadowing -fno-warn-missing-signatures -fno-warn-type-defaults -fno-warn-orphans
     cpp-options: -DVERSION="1.0.1"
     build-depends:
-          hledger-lib >= 1.0.1
-        , hledger >= 1.0.1
+          hledger-lib >= 1.0.1 && < 1.1
+        , hledger >= 1.0.1 && < 1.1
         , base >=4 && <5
         , base-compat >=0.8.1
         , blaze-html
@@ -266,8 +266,8 @@ test-suite test
     ghc-options: -Wall -fno-warn-unused-do-bind -fno-warn-name-shadowing -fno-warn-missing-signatures -fno-warn-type-defaults -fno-warn-orphans
     cpp-options: -DVERSION="1.0.1"
     build-depends:
-          hledger-lib >= 1.0.1
-        , hledger >= 1.0.1
+          hledger-lib >= 1.0.1 && < 1.1
+        , hledger >= 1.0.1 && < 1.1
         , base >=4 && <5
         , base-compat >=0.8.1
         , blaze-html
@@ -298,7 +298,7 @@ test-suite test
         , yesod-form
         , yesod-static
         , json
-        , hledger-web
+        , hledger-web == 1.0.1
         , hspec
         , yesod-test
     if flag(oldtime)
diff --git a/hledger-web/package.yaml b/hledger-web/package.yaml
index 933ba5289..4c9918bdb 100644
--- a/hledger-web/package.yaml
+++ b/hledger-web/package.yaml
@@ -60,8 +60,8 @@ flags:
     manual: false
     default: false
 dependencies:
-- hledger-lib >= 1.0.1
-- hledger >= 1.0.1
+- hledger-lib >= 1.0.1 && < 1.1
+- hledger >= 1.0.1 && < 1.1
 - base >=4 && <5
 - base-compat >=0.8.1
 - blaze-html
@@ -169,7 +169,7 @@ tests:
     source-dirs: tests
     cpp-options: -DVERSION="1.0.1"
     dependencies:
-    - hledger-web
+    - hledger-web == 1.0.1
     - hspec
     - yesod-test
     when:
diff --git a/hledger/hledger.cabal b/hledger/hledger.cabal
index 58629555a..8ba4dd8a6 100644
--- a/hledger/hledger.cabal
+++ b/hledger/hledger.cabal
@@ -91,7 +91,7 @@ library
     , process
     , temporary
     , tabular >=0.2 && <0.3
-    , hledger-lib ==1.0.1
+    , hledger-lib >= 1.0.1 && < 1.1
     , bytestring
     , containers
     , unordered-containers
@@ -174,8 +174,8 @@ executable hledger
     , process
     , temporary
     , tabular >=0.2 && <0.3
-    , hledger-lib >= 1.0.1
-    , hledger >= 1.0.1
+    , hledger-lib >= 1.0.1 && < 1.1
+    , hledger == 1.0.1
     , bytestring
     , containers
     , unordered-containers
@@ -235,8 +235,8 @@ test-suite test
     , process
     , temporary
     , tabular >=0.2 && <0.3
-    , hledger-lib ==1.0.1
-    , hledger
+    , hledger-lib >= 1.0.1 && < 1.1
+    , hledger == 1.0.1
     , bytestring
     , containers
     , unordered-containers
@@ -296,8 +296,8 @@ benchmark bench
     , process
     , temporary
     , tabular >=0.2 && <0.3
-    , hledger-lib
-    , hledger
+    , hledger-lib >= 1.0.1 && < 1.1
+    , hledger == 1.0.1
     , criterion
     , html
     , timeit
diff --git a/hledger/package.yaml b/hledger/package.yaml
index d36dbd441..e7565f2a8 100644
--- a/hledger/package.yaml
+++ b/hledger/package.yaml
@@ -104,7 +104,7 @@ library:
   - Hledger.Cli.Stats
   - Text.Tabular.AsciiWide
   dependencies:
-  - hledger-lib ==1.0.1
+  - hledger-lib >= 1.0.1 && < 1.1
   - bytestring
   - containers
   - unordered-containers
@@ -154,8 +154,8 @@ executables:
     source-dirs: app
     cpp-options: -DVERSION="1.0.1"
     dependencies:
-    - hledger-lib >= 1.0.1
-    - hledger >= 1.0.1
+    - hledger-lib >= 1.0.1 && < 1.1
+    - hledger == 1.0.1
     - bytestring
     - containers
     - unordered-containers
@@ -205,8 +205,8 @@ tests:
     source-dirs: test
     cpp-options: -DVERSION="1.0.1"
     dependencies:
-    - hledger-lib ==1.0.1
-    - hledger
+    - hledger-lib >= 1.0.1 && < 1.1
+    - hledger == 1.0.1
     - bytestring
     - containers
     - unordered-containers
@@ -255,8 +255,8 @@ benchmarks:
     main: bench.hs
     source-dirs: bench
     dependencies:
-    - hledger-lib
-    - hledger
+    - hledger-lib >= 1.0.1 && < 1.1
+    - hledger == 1.0.1
     - criterion
     - html
     - timeit