diff --git a/package.yaml b/package.yaml
index 538bfd1..a1d318d 100644
--- a/package.yaml
+++ b/package.yaml
@@ -26,8 +26,8 @@ dependencies:
 - uuid
 - text
 - websockets
-- strict-concurrency
 - bytestring
+- containers
 
 library:
   source-dirs: src
diff --git a/tickLeisteServer.cabal b/tickLeisteServer.cabal
index f65c514..be0ac9f 100644
--- a/tickLeisteServer.cabal
+++ b/tickLeisteServer.cabal
@@ -35,7 +35,7 @@ library
       aeson
     , base >=4.7 && <5
     , bytestring
-    , strict-concurrency
+    , containers
     , text
     , tickLeiste
     , uuid
@@ -54,7 +54,7 @@ executable tickLeisteServer
       aeson
     , base >=4.7 && <5
     , bytestring
-    , strict-concurrency
+    , containers
     , text
     , tickLeiste
     , tickLeisteServer
@@ -74,7 +74,7 @@ test-suite tickLeisteServer-test
       aeson
     , base >=4.7 && <5
     , bytestring
-    , strict-concurrency
+    , containers
     , text
     , tickLeiste
     , tickLeisteServer