diff --git a/dotnet-monitor-works/test.sh b/dotnet-monitor-works/test.sh
index 9bec9fe..5e71791 100755
--- a/dotnet-monitor-works/test.sh
+++ b/dotnet-monitor-works/test.sh
@@ -10,16 +10,13 @@ dotnet tool update -g dotnet-monitor --version "${VERSION_SPLIT[0]}.*-*"
 export PATH="$HOME/.dotnet/tools:$PATH"
 
 dotnet-monitor collect --no-auth &
-sleep 5
-indexhttps=$(wget --no-check-certificate -O https.html https://127.0.0.1:52323/info)
+../run-until-success-with-backoff wget --no-check-certificate -O https.html https://127.0.0.1:52323/info
 
 https=$(cat https.html)
 
 if [[ $https == *"version"* ]]; then
-   sleep 5
    echo "collect - OK"
 else
-   sleep 5
    pkill dotnet-monitor
    rm "https.html"
    echo "collect - FAIL"
@@ -45,4 +42,4 @@ else
    echo "generatekey - FAIL"
    pkill dotnet-monitor
    exit 1
-fi
\ No newline at end of file
+fi
diff --git a/libuv-kestrel-sample-app-2x/test.sh b/libuv-kestrel-sample-app-2x/test.sh
index ad4c6bf..9dc0ad7 100755
--- a/libuv-kestrel-sample-app-2x/test.sh
+++ b/libuv-kestrel-sample-app-2x/test.sh
@@ -9,9 +9,7 @@ dotnet build
 dotnet bin/Debug/netcoreapp*/libuv-kestrel-sample-app-2x.dll &
 root_pid=$!
 
-sleep 5
-
-curl "http://localhost:5000"
+../run-until-success-with-backoff curl "http://localhost:5000"
 
 kill -s SIGTERM "${root_pid}"
 sleep 1
diff --git a/publish-aspnet-selfcontained/test.sh b/publish-aspnet-selfcontained/test.sh
index 88c7955..096405c 100755
--- a/publish-aspnet-selfcontained/test.sh
+++ b/publish-aspnet-selfcontained/test.sh
@@ -28,11 +28,10 @@ ASPNETCORE_URLS="$url" "./$output_dir/web" &
 run_pid=$!
 trap "kill $run_pid && wait $run_pid" EXIT
 
-sleep 5
 
-if ! curl "$url"; then
+if ! ../run-until-success-with-backoff curl "$url" ; then
   echo 'FAIL: ASP.NET app failed to respond'
   exit 2
 fi
 
-echo "PASS"
\ No newline at end of file
+echo "PASS"
diff --git a/run-until-success-with-backoff b/run-until-success-with-backoff
new file mode 100755
index 0000000..212a617
--- /dev/null
+++ b/run-until-success-with-backoff
@@ -0,0 +1,26 @@
+#!/bin/bash
+
+set -euo pipefail
+
+echo "Running with backoff:" "$@"
+
+max_retries=10
+
+iterations=0
+total_slept=0 # seconds
+
+sleep $((iterations + 1))
+((total_slept += iterations + 1))
+
+until "$@"; do
+    ((iterations += 1))
+    if (( total_slept > 10 )); then
+        echo "$@" "still failing after more than ${total_slept} seconds"
+    fi
+    if (( iterations == max_retries )); then
+        echo "$@" "still failing after $max_retries retries"
+        exit 1
+    fi
+    sleep $iterations
+    ((total_slept += iterations))
+done