diff --git a/gf.cabal b/gf.cabal
index b4dcf81a05..c8386d3a85 100644
--- a/gf.cabal
+++ b/gf.cabal
@@ -11,7 +11,7 @@ description: GF, Grammatical Framework, is a programming language for multilingu
 maintainer: John J. Camilleri <john@digitalgrammars.com>
 homepage: https://www.grammaticalframework.org/
 bug-reports: https://github.com/GrammaticalFramework/gf-core/issues
-tested-with: GHC==7.10.3, GHC==8.0.2, GHC==8.10.4
+tested-with: GHC==7.10.3, GHC==8.0.2, GHC==8.10.4, GHC==9.0.2
 
 data-dir: src
 extra-source-files:
@@ -46,7 +46,7 @@ data-files:
 
 custom-setup
   setup-depends:
-    base >= 4.9.1 && < 4.15,
+    base >= 4.9.1 && < 4.16,
     Cabal >= 1.22.0.0,
     directory >= 1.3.0 && < 1.4,
     filepath >= 1.4.1 && < 1.5,
@@ -81,11 +81,11 @@ library
   build-depends:
     -- GHC 8.0.2 to GHC 8.10.4
     array >= 0.5.1 && < 0.6,
-    base >= 4.9.1 && < 4.15,
+    base >= 4.9.1 && < 4.16,
     bytestring >= 0.10.8 && < 0.11,
     containers >= 0.5.7 && < 0.7,
     exceptions >= 0.8.3 && < 0.11,
-    ghc-prim >= 0.5.0 && < 0.7,
+    ghc-prim >= 0.5.0 && < 0.7.1,
     mtl >= 2.2.1 && < 2.3,
     pretty >= 1.1.3 && < 1.2,
     random >= 1.1 && < 1.3,
@@ -302,14 +302,14 @@ library
     build-depends:
       cgi >= 3001.3.0.2 && < 3001.6,
       httpd-shed >= 0.4.0 && < 0.5,
-      network>=2.3 && <2.7
+      network>=2.3 && <3.2
     if flag(network-uri)
       build-depends:
         network-uri >= 2.6.1.0 && < 2.7,
-        network>=2.6 && <2.7
+        network>=2.6 && <3.2
     else
       build-depends:
-        network >= 2.5 && <2.6
+        network >= 2.5 && <3.2
 
     cpp-options: -DSERVER_MODE
     other-modules:
diff --git a/stack-ghc9.0.2.yaml b/stack-ghc9.0.2.yaml
new file mode 100644
index 0000000000..17eb5c855b
--- /dev/null
+++ b/stack-ghc9.0.2.yaml
@@ -0,0 +1,14 @@
+resolver: nightly-2022-02-19
+
+extra-deps:
+# - network-2.6.3.6
+# - httpd-shed-0.4.0.3
+# - cgi-3001.5.0.0@sha256:3d1193a328d5f627a021a0ef3927c1ae41dd341e32dba612fed52d0e3a6df056,2990
+# - json-0.10@sha256:d9fc6b07ce92b8894825a17d2cf14799856767eb30c8bf55962baa579207d799,3210
+# - multipart-0.2.0@sha256:b8770e3ff6089be4dd089a8250894b31287cca671f3d258190a505f9351fa8a9,1084
+
+# flags:
+#   gf:
+#     c-runtime: true
+# extra-lib-dirs:
+#   - /usr/local/lib