diff --git a/hledger-web/devel.hs b/hledger-web/app/devel.hs
similarity index 100%
rename from hledger-web/devel.hs
rename to hledger-web/app/devel.hs
diff --git a/hledger-web/hledger-web.cabal b/hledger-web/hledger-web.cabal
index 063eff6a1..6d5caabcd 100644
--- a/hledger-web/hledger-web.cabal
+++ b/hledger-web/hledger-web.cabal
@@ -119,6 +119,7 @@ flag threaded
   default: True
 
 library
+  hs-source-dirs: src
   exposed-modules:
       Application
       Foundation
diff --git a/hledger-web/package.yaml b/hledger-web/package.yaml
index 58f8087cf..5d514cf3b 100644
--- a/hledger-web/package.yaml
+++ b/hledger-web/package.yaml
@@ -113,6 +113,7 @@ ghc-options:
 - -fwarn-tabs
 
 library:
+  source-dirs: src
   cpp-options: -DVERSION="1.9.99"
   exposed-modules:
   - Application
diff --git a/hledger-web/Application.hs b/hledger-web/src/Application.hs
similarity index 100%
rename from hledger-web/Application.hs
rename to hledger-web/src/Application.hs
diff --git a/hledger-web/Foundation.hs b/hledger-web/src/Foundation.hs
similarity index 100%
rename from hledger-web/Foundation.hs
rename to hledger-web/src/Foundation.hs
diff --git a/hledger-web/Handler/AddForm.hs b/hledger-web/src/Handler/AddForm.hs
similarity index 100%
rename from hledger-web/Handler/AddForm.hs
rename to hledger-web/src/Handler/AddForm.hs
diff --git a/hledger-web/Handler/AddR.hs b/hledger-web/src/Handler/AddR.hs
similarity index 100%
rename from hledger-web/Handler/AddR.hs
rename to hledger-web/src/Handler/AddR.hs
diff --git a/hledger-web/Handler/Common.hs b/hledger-web/src/Handler/Common.hs
similarity index 100%
rename from hledger-web/Handler/Common.hs
rename to hledger-web/src/Handler/Common.hs
diff --git a/hledger-web/Handler/EditR.hs b/hledger-web/src/Handler/EditR.hs
similarity index 100%
rename from hledger-web/Handler/EditR.hs
rename to hledger-web/src/Handler/EditR.hs
diff --git a/hledger-web/Handler/ImportR.hs b/hledger-web/src/Handler/ImportR.hs
similarity index 100%
rename from hledger-web/Handler/ImportR.hs
rename to hledger-web/src/Handler/ImportR.hs
diff --git a/hledger-web/Handler/JournalR.hs b/hledger-web/src/Handler/JournalR.hs
similarity index 100%
rename from hledger-web/Handler/JournalR.hs
rename to hledger-web/src/Handler/JournalR.hs
diff --git a/hledger-web/Handler/RegisterR.hs b/hledger-web/src/Handler/RegisterR.hs
similarity index 100%
rename from hledger-web/Handler/RegisterR.hs
rename to hledger-web/src/Handler/RegisterR.hs
diff --git a/hledger-web/Handler/RootR.hs b/hledger-web/src/Handler/RootR.hs
similarity index 100%
rename from hledger-web/Handler/RootR.hs
rename to hledger-web/src/Handler/RootR.hs
diff --git a/hledger-web/Handler/SidebarR.hs b/hledger-web/src/Handler/SidebarR.hs
similarity index 100%
rename from hledger-web/Handler/SidebarR.hs
rename to hledger-web/src/Handler/SidebarR.hs
diff --git a/hledger-web/Hledger/Web.hs b/hledger-web/src/Hledger/Web.hs
similarity index 100%
rename from hledger-web/Hledger/Web.hs
rename to hledger-web/src/Hledger/Web.hs
diff --git a/hledger-web/Hledger/Web/Main.hs b/hledger-web/src/Hledger/Web/Main.hs
similarity index 100%
rename from hledger-web/Hledger/Web/Main.hs
rename to hledger-web/src/Hledger/Web/Main.hs
diff --git a/hledger-web/Hledger/Web/WebOptions.hs b/hledger-web/src/Hledger/Web/WebOptions.hs
similarity index 100%
rename from hledger-web/Hledger/Web/WebOptions.hs
rename to hledger-web/src/Hledger/Web/WebOptions.hs
diff --git a/hledger-web/Import.hs b/hledger-web/src/Import.hs
similarity index 100%
rename from hledger-web/Import.hs
rename to hledger-web/src/Import.hs
diff --git a/hledger-web/Settings.hs b/hledger-web/src/Settings.hs
similarity index 100%
rename from hledger-web/Settings.hs
rename to hledger-web/src/Settings.hs
diff --git a/hledger-web/Settings/Development.hs b/hledger-web/src/Settings/Development.hs
similarity index 100%
rename from hledger-web/Settings/Development.hs
rename to hledger-web/src/Settings/Development.hs
diff --git a/hledger-web/Settings/StaticFiles.hs b/hledger-web/src/Settings/StaticFiles.hs
similarity index 100%
rename from hledger-web/Settings/StaticFiles.hs
rename to hledger-web/src/Settings/StaticFiles.hs