diff --git a/package.yaml b/package.yaml
index ce4f42a9c..88889931c 100644
--- a/package.yaml
+++ b/package.yaml
@@ -22,7 +22,7 @@ extra-source-files:
   - CHANGELOG.md
 
 dependencies:
-  - ansi-terminal == 0.10.*
+  - ansi-terminal >= 0.10 && < 0.12
   - asn1-encoding == 0.9.*
   - asn1-types == 0.3.*
   - async == 2.2.*
@@ -31,21 +31,21 @@ dependencies:
   - base64-bytestring >= 1.0 && < 1.3
   - bytestring == 0.10.*
   - composition == 1.0.*
-  - constraints == 0.12.*
+  - constraints >= 0.12 && < 0.14
   - containers == 0.6.*
-  - cryptonite == 0.27.*
+  - cryptonite >= 0.27 && < 0.30
   - direct-sqlite == 2.3.*
   - directory == 1.3.*
   - file-embed == 0.0.14.*
   - filepath == 1.4.*
-  - generic-random == 1.3.*
+  - generic-random >= 1.3 && < 1.5
   - iso8601-time == 0.1.*
   - memory == 0.15.*
   - mtl == 2.2.*
   - network == 3.1.*
   - network-transport == 0.5.*
   - QuickCheck == 2.14.*
-  - random == 1.1.*
+  - random >= 1.1 && < 1.3
   - simple-logger == 0.1.*
   - sqlite-simple == 0.4.*
   - stm == 2.5.*
@@ -68,7 +68,7 @@ executables:
     dependencies:
       - cryptostore == 0.2.*
       - ini == 0.4.*
-      - optparse-applicative == 0.15.*
+      - optparse-applicative >= 0.15 && < 0.17
       - simplexmq
     ghc-options:
       - -threaded
@@ -90,7 +90,6 @@ tests:
       - hspec == 2.7.*
       - hspec-core == 2.7.*
       - HUnit == 1.6.*
-      - random == 1.1.*
       - QuickCheck == 2.14.*
       - timeit == 2.0.*
 
diff --git a/stack.yaml b/stack.yaml
index ae97d2a94..70267dd80 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -17,7 +17,7 @@
 #
 # resolver: ./custom-snapshot.yaml
 # resolver: https://example.com/snapshots/2018-01-01.yaml
-resolver: lts-17.12
+resolver: lts-18.0
 
 # User packages to be built.
 # Various formats can be used as shown in the example below.
diff --git a/tests/AgentTests/SQLiteTests.hs b/tests/AgentTests/SQLiteTests.hs
index 6dd69da19..56fd88514 100644
--- a/tests/AgentTests/SQLiteTests.hs
+++ b/tests/AgentTests/SQLiteTests.hs
@@ -27,7 +27,7 @@ import Simplex.Messaging.Agent.Store
 import Simplex.Messaging.Agent.Store.SQLite
 import qualified Simplex.Messaging.Agent.Store.SQLite.Migrations as Migrations
 import qualified Simplex.Messaging.Crypto as C
-import System.Random (Random (randomIO))
+import System.Random
 import Test.Hspec
 import UnliftIO.Directory (removeFile)