diff --git a/bureaucromancy.cabal b/bureaucromancy.cabal
--- a/bureaucromancy.cabal
+++ b/bureaucromancy.cabal
@@ -20,7 +20,7 @@
 -- PVP summary:     +-+------- breaking API changes
 --                  | | +----- non-breaking API additions
 --                  | | | +--- code changes with no API change
-version:            0.1.0.0
+version:            0.1.0.1
 
 -- A short (one-line) description of the package.
 synopsis:           Parse webforms & render to interactive hypertext
@@ -74,9 +74,12 @@
     -- other-extensions:
 
     -- Other library packages from which modules are imported.
-    build-depends:    base ^>=4.16.4.0, ginger, file-embed-lzma, file-embed, mtl,
-            bytestring, text, xml-conduit, network-uri, regex-tdfa, containers,
-            filepath, directory, hourglass >= 0.2.12 && < 0.3, tz >= 0.1 && < 0.2,
+    build-depends:    base >=4.16.4.0 && <5, ginger>0.10 && <1,
+            file-embed-lzma >=0.0.1 && <1, file-embed >=0.0.15 && < 0.1, mtl >2 && <3,
+            bytestring >=0.11 && <1, text >=2 && <3, containers >=0.6 && <1,
+            xml-conduit >= 1.9 && <2, network-uri >=2.6 && <3, regex-tdfa >=1.3 && <2,
+            filepath >=1.4 && <2, directory >=1.2 && <2,
+            hourglass >= 0.2.12 && < 0.3, tz >= 0.1 && < 0.2
 
     -- Directories containing source files.
     hs-source-dirs:   src
@@ -99,7 +102,7 @@
 
     -- Other library packages from which modules are imported.
     build-depends:
-        base ^>=4.16.4.0,
+        base >=4.16.4.0 && <5,
         bureaucromancy, warp, wai, http-types, text, html-conduit
 
     -- Directories containing source files.