diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+### 0.9.0.1
+
+* Make tests pass with stack 2.1.1
+
 ### 0.9.0
 
 * Support GHC 8.6
diff --git a/hint.cabal b/hint.cabal
--- a/hint.cabal
+++ b/hint.cabal
@@ -1,5 +1,5 @@
 name:         hint
-version:      0.9.0
+version:      0.9.0.1
 description:
         This library defines an Interpreter monad. It allows to load Haskell
         modules, browse them, type-check and evaluate strings with Haskell
@@ -41,7 +41,10 @@
                   directory,
                   filepath,
                   extensible-exceptions,
-                  exceptions >= 0.10.0
+                  exceptions >= 0.10.0,
+
+                  -- packages used by setImports calls
+                  containers
 
   if !os(windows) {
       build-depends: unix >= 2.2.0.0