diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 514a326..9b777e3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -156,6 +156,10 @@ jobs:
           nim --version
           nimble --version
           nimble install -y --depsOnly
-          rm -f nimble.lock
+
           env NIMLANG=c nimble test
           env NIMLANG=cpp nimble test
+
+          nimble install chronos
+          env NIMLANG=c nimble testChronos || true
+          env NIMLANG=cpp nimble testChronos || true
diff --git a/faststreams.nimble b/faststreams.nimble
index 7dfaa0a..82c90d7 100644
--- a/faststreams.nimble
+++ b/faststreams.nimble
@@ -9,7 +9,6 @@ skipDirs      = @["tests"]
 
 requires "nim >= 1.2.0",
          "stew",
-         "chronos",
          "unittest2"
 
 let nimc = getEnv("NIMC", "nim") # Which nim compiler to use
@@ -31,8 +30,15 @@ proc run(args, path: string) =
 
 task test, "Run all tests":
   # TODO asyncdispatch backend is broken / untested
-  for backend in ["-d:asyncBackend=none", "-d:asyncBackend=chronos"]:
+  # TODO chronos backend uses nested waitFor which is not supported
+  for backend in ["-d:asyncBackend=none"]:
     for threads in ["--threads:off", "--threads:on"]:
       for mode in ["-d:debug", "-d:release", "-d:danger"]:
         run backend & " " & threads & " " & mode, "tests/all_tests"
 
+task testChronos, "Run chronos tests":
+  # TODO chronos backend uses nested waitFor which is not supported
+  for backend in ["-d:asyncBackend=chronos"]:
+    for threads in ["--threads:off", "--threads:on"]:
+      for mode in ["-d:debug", "-d:release", "-d:danger"]:
+        run backend & " " & threads & " " & mode, "tests/all_tests"
diff --git a/faststreams/async_backend.nim b/faststreams/async_backend.nim
index ef9fe79..2086e09 100644
--- a/faststreams/async_backend.nim
+++ b/faststreams/async_backend.nim
@@ -20,6 +20,8 @@ const
 when asyncBackend == "none":
   discard
 elif asyncBackend == "chronos":
+  {.warning: "chronos backend uses nested calls to `waitFor` which is not supported by chronos - it is not recommended to use it until this has been resolved".}
+
   import
     chronos
 
@@ -30,6 +32,8 @@ elif asyncBackend == "chronos":
     await f
 
 elif asyncBackend == "asyncdispatch":
+  {.warning: "asyncdispatch backend currently fails tests - it may or may not work as expected".}
+
   import
     std/asyncdispatch