diff --git a/.version b/.version
index 809bdcb85..d8e473814 100644
--- a/.version
+++ b/.version
@@ -1 +1 @@
-1.12
+1.12.99
diff --git a/doc/lib.m4 b/doc/lib.m4
index 11a15135d..5cc170c87 100644
--- a/doc/lib.m4
+++ b/doc/lib.m4
@@ -7,15 +7,15 @@ m4_define({{_webseparate_}}, m4_ifdef({{WEB && SEPARATE}},{{$1}}) )m4_dnl
 m4_define({{_webcombined_}}, m4_ifdef({{WEB && COMBINED}},{{$1}}) )m4_dnl
 m4_dnl
 m4_define({{_author_}}, {{}})m4_dnl
-m4_define({{_monthyear_}}, {{December 2018}})m4_dnl
-m4_define({{_version_}}, {{1.12}})m4_dnl
+m4_define({{_monthyear_}}, {{January 2019}})m4_dnl
+m4_define({{_version_}}, {{1.12.99}})m4_dnl
 m4_dnl
 m4_dnl Links to dev and recent release versions of a manual.
 m4_dnl $1 is the manual's web slug: hledger, hledger-ui, journal, csv etc.
 m4_dnl The current version is hidden (or whatever) by highlightDocVersion in site.js.
 m4_dnl
 m4_define({{_docversionlinks_}},m4_dnl
-This doc is for version **_version_**.
+This doc is for version **_version_** (dev).
 <span class="docversions">m4_dnl
 m4_dnl #(inserted by site.js, too painful for static generation)
 m4_dnl #Available versions:
diff --git a/hledger-api/hledger-api.cabal b/hledger-api/hledger-api.cabal
index 52013121e..8f5b30025 100644
--- a/hledger-api/hledger-api.cabal
+++ b/hledger-api/hledger-api.cabal
@@ -1,13 +1,13 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.31.0.
+-- This file has been generated from package.yaml by hpack version 0.31.1.
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 2568034d40718576decaeee8d4cc375ed16568df787da9eef3ed8664bd3184ad
+-- hash: 29c7a97d43d26ed7bea4f113454d2fab1fae95f4dc1f8105966068c518bbfb93
 
 name:           hledger-api
-version:        1.12
+version:        1.12.99
 synopsis:       Web API server for the hledger accounting tool
 description:    This is a simple web API server for hledger data.
                 It comes with a series of simple client-side web app examples.
@@ -46,7 +46,7 @@ executable hledger-api
   other-modules:
       Paths_hledger_api
   ghc-options: -threaded
-  cpp-options: -DVERSION="1.12"
+  cpp-options: -DVERSION="1.12.99"
   build-depends:
       Decimal
     , aeson
@@ -56,8 +56,8 @@ executable hledger-api
     , data-default >=0.5
     , docopt
     , either
-    , hledger >=1.12 && <1.13
-    , hledger-lib >=1.12 && <1.13
+    , hledger >=1.12.99 && <1.13
+    , hledger-lib >=1.12.99 && <1.13
     , microlens >=0.4
     , microlens-platform >=0.2.3.1
     , safe
diff --git a/hledger-api/hledger-api.hs b/hledger-api/hledger-api.hs
index 1f4a1d143..517372ab5 100644
--- a/hledger-api/hledger-api.hs
+++ b/hledger-api/hledger-api.hs
@@ -37,12 +37,12 @@ import           Text.Printf
 import Hledger.Query
 import Hledger.Cli hiding (Reader, version)
 
-hledgerApiVersion="1.12"
+hledgerApiVersion="1.12.99"
 
 -- https://github.com/docopt/docopt.hs#readme
 doc :: Docopt
 doc = [docopt|
-hledger-api 1.12
+hledger-api 1.12.99
 
 Serves hledger data and reports as a JSON web API.
 
diff --git a/hledger-api/package.yaml b/hledger-api/package.yaml
index d43bae1ea..c530f5440 100644
--- a/hledger-api/package.yaml
+++ b/hledger-api/package.yaml
@@ -1,5 +1,5 @@
 name: hledger-api
-version: '1.12'
+version: '1.12.99'
 synopsis: Web API server for the hledger accounting tool
 description: |
   This is a simple web API server for hledger data.
@@ -32,8 +32,8 @@ extra-source-files:
 #data-files:
 
 dependencies:
-- hledger-lib >=1.12 && <1.13
-- hledger >=1.12 && <1.13
+- hledger-lib >=1.12.99 && <1.13
+- hledger >=1.12.99 && <1.13
 - base >=4.8 && <4.13
 - aeson
 - bytestring
@@ -58,4 +58,4 @@ executables:
   hledger-api:
     main: hledger-api.hs
     ghc-options: -threaded
-    cpp-options: -DVERSION="1.12"
+    cpp-options: -DVERSION="1.12.99"
diff --git a/hledger-lib/hledger-lib.cabal b/hledger-lib/hledger-lib.cabal
index 9e0a152b3..c43d25a00 100644
--- a/hledger-lib/hledger-lib.cabal
+++ b/hledger-lib/hledger-lib.cabal
@@ -1,13 +1,13 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.31.0.
+-- This file has been generated from package.yaml by hpack version 0.31.1.
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 8e0ce73c7c86c909a78d4d06e8566f8b66bc1df89f508da0b05df073c4ecd7c9
+-- hash: 5eeed8eb71daf911935de5bfea0165fae6b05edd0811a04b03eeb092853df19c
 
 name:           hledger-lib
-version:        1.12
+version:        1.12.99
 synopsis:       Core data types, parsers and functionality for the hledger accounting tools
 description:    This is a reusable library containing hledger's core functionality.
                 .
diff --git a/hledger-lib/package.yaml b/hledger-lib/package.yaml
index 5f414df99..fac81fef8 100644
--- a/hledger-lib/package.yaml
+++ b/hledger-lib/package.yaml
@@ -1,5 +1,5 @@
 name: hledger-lib
-version: '1.12'
+version: '1.12.99'
 synopsis: Core data types, parsers and functionality for the hledger accounting tools
 description: |
   This is a reusable library containing hledger's core functionality.
diff --git a/hledger-ui/hledger-ui.cabal b/hledger-ui/hledger-ui.cabal
index 6f690d098..c328302df 100644
--- a/hledger-ui/hledger-ui.cabal
+++ b/hledger-ui/hledger-ui.cabal
@@ -1,13 +1,13 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.31.0.
+-- This file has been generated from package.yaml by hpack version 0.31.1.
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 6eaadbd685786699b84803bd6d20d97c53ff8bd9c34b7d5457ba01e07c47f5f3
+-- hash: 9e7f4d999a8b69e7adb4b03f99c96b7ae47113f1b11fe7ddb289e352b2632e7c
 
 name:           hledger-ui
-version:        1.12.1
+version:        1.12.99
 synopsis:       Curses-style user interface for the hledger accounting tool
 description:    This is hledger's curses-style interface.
                 It is simpler and more convenient for browsing data than the command-line interface,
@@ -64,7 +64,7 @@ executable hledger-ui
   hs-source-dirs:
       ./.
   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="1.12.1"
+  cpp-options: -DVERSION="1.12.99"
   build-depends:
       ansi-terminal >=0.6.2.3
     , async
@@ -76,8 +76,8 @@ executable hledger-ui
     , directory
     , filepath
     , fsnotify >=0.2.1.2 && <0.4
-    , hledger >=1.12 && <1.13
-    , hledger-lib >=1.12 && <1.13
+    , hledger >=1.12.99 && <1.13
+    , hledger-lib >=1.12.99 && <1.13
     , megaparsec >=7.0.0 && <8
     , microlens >=0.4
     , microlens-platform >=0.2.3.1
diff --git a/hledger-ui/package.yaml b/hledger-ui/package.yaml
index badb45c56..51cb6a5e7 100644
--- a/hledger-ui/package.yaml
+++ b/hledger-ui/package.yaml
@@ -1,5 +1,5 @@
 name        : hledger-ui
-version     : '1.12.1'
+version     : '1.12.99'
 synopsis    : Curses-style user interface for the hledger accounting tool
 description : |
   This is hledger's curses-style interface.
@@ -37,11 +37,11 @@ flags:
     manual: false
     default: true
 
-cpp-options: -DVERSION="1.12.1"
+cpp-options: -DVERSION="1.12.99"
 
 dependencies:
-- hledger >=1.12 && <1.13
-- hledger-lib >=1.12 && <1.13
+- hledger >=1.12.99 && <1.13
+- hledger-lib >=1.12.99 && <1.13
 - ansi-terminal >=0.6.2.3
 - async
 - base >=4.8 && <4.13
diff --git a/hledger-web/hledger-web.cabal b/hledger-web/hledger-web.cabal
index f8c3a24d3..eb4fc4730 100644
--- a/hledger-web/hledger-web.cabal
+++ b/hledger-web/hledger-web.cabal
@@ -1,13 +1,13 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.31.0.
+-- This file has been generated from package.yaml by hpack version 0.31.1.
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 5561e1638c4aa51f58f3983ce8187999995f3e67b5cd8654e8cc2f71a8bbb7da
+-- hash: 7d612fb9e126b116d0d97b8e687e8c9d4705c2e852bbe328ea42e1fab54b0c5c
 
 name:           hledger-web
-version:        1.12
+version:        1.12.99
 synopsis:       Web interface for the hledger accounting tool
 description:    This is hledger's web interface.
                 It provides a more user-friendly and collaborative UI than the
@@ -150,7 +150,7 @@ library
   hs-source-dirs:
       ./.
   ghc-options: -Wall -fwarn-tabs
-  cpp-options: -DVERSION="1.12"
+  cpp-options: -DVERSION="1.12.99"
   build-depends:
       base >=4.8 && <4.13
     , blaze-html
@@ -165,8 +165,8 @@ library
     , directory
     , filepath
     , hjsmin
-    , hledger >=1.12 && <1.13
-    , hledger-lib >=1.12 && <1.13
+    , hledger >=1.12.99 && <1.13
+    , hledger-lib >=1.12.99 && <1.13
     , http-client
     , http-conduit
     , json
@@ -206,7 +206,7 @@ executable hledger-web
   hs-source-dirs:
       app
   ghc-options: -Wall -fwarn-tabs
-  cpp-options: -DVERSION="1.12"
+  cpp-options: -DVERSION="1.12.99"
   build-depends:
       base
     , hledger-web
diff --git a/hledger-web/package.yaml b/hledger-web/package.yaml
index d585f4df7..3e18070de 100644
--- a/hledger-web/package.yaml
+++ b/hledger-web/package.yaml
@@ -1,5 +1,5 @@
 name: hledger-web
-version: '1.12'
+version: '1.12.99'
 synopsis: Web interface for the hledger accounting tool
 description: |
   This is hledger's web interface.
@@ -79,7 +79,7 @@ when:
 
 library:
   source-dirs: .
-  cpp-options: -DVERSION="1.12"
+  cpp-options: -DVERSION="1.12.99"
   exposed-modules:
   - Hledger.Web
   - Hledger.Web.Application
@@ -98,8 +98,8 @@ library:
   - Hledger.Web.Widget.AddForm
   - Hledger.Web.Widget.Common
   dependencies:
-  - hledger-lib >=1.12 && <1.13
-  - hledger >=1.12 && <1.13
+  - hledger-lib >=1.12.99 && <1.13
+  - hledger >=1.12.99 && <1.13
   - base >=4.8 && <4.13
   - blaze-html
   - blaze-markup
@@ -145,7 +145,7 @@ executables:
   hledger-web:
     source-dirs: app
     main: main.hs
-    cpp-options: -DVERSION="1.12"
+    cpp-options: -DVERSION="1.12.99"
     dependencies:
     - base
     - hledger-web
@@ -162,7 +162,7 @@ executables:
 #   test:
 #     source-dirs: tests
 #     main: main.hs
-#     cpp-options: -DVERSION="1.12"
+#     cpp-options: -DVERSION="1.12.99"
 #     dependencies:
 #     - base
 #     - hledger-web
diff --git a/hledger/hledger.cabal b/hledger/hledger.cabal
index 93325d74f..b5ac6255a 100644
--- a/hledger/hledger.cabal
+++ b/hledger/hledger.cabal
@@ -1,13 +1,13 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.31.0.
+-- This file has been generated from package.yaml by hpack version 0.31.1.
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 269994bfba5ad36962478f05df1bf958a94778ec5b36db499d768b64aa3e411a
+-- hash: 5e004994f6f3f961edee83542d3b428dc7eb7cb365b32822b513b988c351f697
 
 name:           hledger
-version:        1.12.1
+version:        1.12.99
 synopsis:       Command-line interface for the hledger accounting tool
 description:    This is hledger's command-line interface.
                 Its basic function is to read a plain text file describing
@@ -112,7 +112,7 @@ library
   other-modules:
       Paths_hledger
   ghc-options: -Wall -fno-warn-unused-do-bind -fno-warn-name-shadowing -fno-warn-missing-signatures -fno-warn-type-defaults -fno-warn-orphans -optP-Wno-nonportable-include-path
-  cpp-options: -DVERSION="1.12.1"
+  cpp-options: -DVERSION="1.12.99"
   build-depends:
       Decimal
     , Diff
@@ -130,7 +130,7 @@ library
     , hashable >=1.2.4
     , haskeline >=0.6
     , here
-    , hledger-lib >=1.12 && <1.13
+    , hledger-lib >=1.12.99 && <1.13
     , lucid
     , math-functions >=0.2.0.0
     , megaparsec >=7.0.0 && <8
@@ -165,7 +165,7 @@ executable hledger
   hs-source-dirs:
       app
   ghc-options: -Wall -fno-warn-unused-do-bind -fno-warn-name-shadowing -fno-warn-missing-signatures -fno-warn-type-defaults -fno-warn-orphans -optP-Wno-nonportable-include-path
-  cpp-options: -DVERSION="1.12.1"
+  cpp-options: -DVERSION="1.12.99"
   build-depends:
       Decimal
     , ansi-terminal >=0.6.2.3
@@ -182,7 +182,7 @@ executable hledger
     , haskeline >=0.6
     , here
     , hledger
-    , hledger-lib >=1.12 && <1.13
+    , hledger-lib >=1.12.99 && <1.13
     , math-functions >=0.2.0.0
     , megaparsec >=7.0.0 && <8
     , mtl
@@ -219,7 +219,7 @@ test-suite test
   hs-source-dirs:
       test
   ghc-options: -Wall -fno-warn-unused-do-bind -fno-warn-name-shadowing -fno-warn-missing-signatures -fno-warn-type-defaults -fno-warn-orphans -optP-Wno-nonportable-include-path
-  cpp-options: -DVERSION="1.12.1"
+  cpp-options: -DVERSION="1.12.99"
   build-depends:
       Decimal
     , ansi-terminal >=0.6.2.3
@@ -236,7 +236,7 @@ test-suite test
     , haskeline >=0.6
     , here
     , hledger
-    , hledger-lib >=1.12 && <1.13
+    , hledger-lib >=1.12.99 && <1.13
     , math-functions >=0.2.0.0
     , megaparsec >=7.0.0 && <8
     , mtl
@@ -290,7 +290,7 @@ benchmark bench
     , haskeline >=0.6
     , here
     , hledger
-    , hledger-lib >=1.12 && <1.13
+    , hledger-lib >=1.12.99 && <1.13
     , html
     , math-functions >=0.2.0.0
     , megaparsec >=7.0.0 && <8
diff --git a/hledger/package.yaml b/hledger/package.yaml
index 6b475ea24..256f5e016 100644
--- a/hledger/package.yaml
+++ b/hledger/package.yaml
@@ -1,5 +1,5 @@
 name: hledger
-version: '1.12.1'
+version: '1.12.99'
 synopsis: Command-line interface for the hledger accounting tool
 description: |
   This is hledger's command-line interface.
@@ -78,7 +78,7 @@ ghc-options:
 - -optP-Wno-nonportable-include-path
 
 dependencies:
-- hledger-lib >=1.12 && <1.13
+- hledger-lib >=1.12.99 && <1.13
 - ansi-terminal >=0.6.2.3
 - base >=4.8 && <4.13
 - base-compat-batteries >=0.10.1 && <0.11
@@ -121,7 +121,7 @@ when:
   - terminfo
 
 library:
-  cpp-options: -DVERSION="1.12.1"
+  cpp-options: -DVERSION="1.12.99"
   exposed-modules:
   - Hledger.Cli
   - Hledger.Cli.Main
@@ -163,7 +163,7 @@ executables:
   hledger:
     source-dirs: app
     main: hledger-cli.hs
-    cpp-options: -DVERSION="1.12.1"
+    cpp-options: -DVERSION="1.12.99"
     when:
     - condition: flag(threaded)
       ghc-options: -threaded
@@ -174,7 +174,7 @@ tests:
   test:
     source-dirs: test
     main: test.hs
-    cpp-options: -DVERSION="1.12.1"
+    cpp-options: -DVERSION="1.12.99"
     dependencies:
     - hledger
     - test-framework