Add upper bounds to base, unix and template-haskell

gf.cabal

@@ -159,7 +159,7 @@ library
     parallel >= 3.2.1.1 && < 3.3,
     process >= 1.4.3 && < 1.7,
     time >= 1.6.0 && <= 1.12.2,
-    template-haskell >= 2.13.0.0
+    template-haskell >= 2.13.0.0 && < 2.21
 
   hs-source-dirs: src/compiler
   exposed-modules:
@@ -350,7 +350,7 @@ library
       terminfo >=0.4.0 && < 0.5
 
     if impl(ghc >= 9.6.6)
-      build-depends: unix >= 2.8
+      build-depends: unix >= 2.8 && < 2.9
 
     else
       build-depends: unix >= 2.7.2 && < 2.8
@@ -365,7 +365,7 @@ executable gf
   default-language: Haskell2010
   build-depends:
     gf,
-    base
+    base >= 4.9.1 && < 4.22
   ghc-options: -threaded
 --ghc-options: -fwarn-unused-imports
 
@@ -399,7 +399,7 @@ test-suite gf-tests
   main-is: run.hs
   hs-source-dirs: testsuite
   build-depends:
-    base >= 4.9.1,
+    base >= 4.9.1 && < 4.22,
     Cabal >= 1.8,
     directory >= 1.3.0 && < 1.4,
     filepath >= 1.4.1 && < 1.5,