diff --git a/.cirrus.yml b/.cirrus.yml
index 98cd6276e0e6..f1abd353a50b 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -39,8 +39,16 @@ task:
         - flutter channel $CHANNEL
         - ./script/incremental_build.sh test
     - name: analyze
+      env:
+        matrix:
+          CHANNEL: "master"
+          CHANNEL: "stable"
       script: ./script/incremental_build.sh analyze
     - name: build_all_plugins_apk
+      env:
+        matrix:
+          CHANNEL: "master"
+          CHANNEL: "stable"
       script:
         # TODO(jackson): Allow web plugins once supported on stable
         # https://github.com/flutter/flutter/issues/42864
@@ -143,6 +151,10 @@ task:
     - xcrun simctl create Flutter-iPhone com.apple.CoreSimulator.SimDeviceType.iPhone-X com.apple.CoreSimulator.SimRuntime.iOS-13-3 | xargs xcrun simctl boot
   matrix:
     - name: build_all_plugins_ipa
+      env:
+        matrix:
+          CHANNEL: "master"
+          CHANNEL: "stable"
       script:
         # TODO(jackson): Allow web plugins once supported on stable
         # https://github.com/flutter/flutter/issues/42864
@@ -196,6 +208,10 @@ task:
   activate_script: pub global activate flutter_plugin_tools
   matrix:
     - name: build_all_plugins_app
+      env:
+        matrix:
+          CHANNEL: "master"
+          CHANNEL: "stable"
       script:
         - flutter channel master
         - ./script/build_all_plugins_app.sh macos
diff --git a/script/build_all_plugins_app.sh b/script/build_all_plugins_app.sh
index f2897f8aa9a2..27d1670f8139 100755
--- a/script/build_all_plugins_app.sh
+++ b/script/build_all_plugins_app.sh
@@ -46,7 +46,7 @@ readonly EXCLUDED=$(IFS=, ; echo "${EXCLUDED_PLUGINS_LIST[*]}")
 
 ALL_EXCLUDED=($EXCLUDED)
 # Exclude nnbd plugins from stable.
-if [[ "$CHANNEL" -eq "stable" ]]; then
+if [ "$CHANNEL" == "stable" ]; then
   ALL_EXCLUDED=("$EXCLUDED,$EXCLUDED_PLUGINS_FROM_STABLE")
 fi
 
diff --git a/script/incremental_build.sh b/script/incremental_build.sh
index f54f90b0669c..3911f0a6e9c8 100755
--- a/script/incremental_build.sh
+++ b/script/incremental_build.sh
@@ -16,7 +16,7 @@ fi
 # Plugins that are excluded from this task.
 ALL_EXCLUDED=("")
 # Exclude nnbd plugins from stable.
-if [[ "$CHANNEL" -eq "stable" ]]; then
+if [ "$CHANNEL" == "stable" ]; then
   ALL_EXCLUDED=($EXCLUDED_PLUGINS_FROM_STABLE)
   echo "Excluding the following plugins: $ALL_EXCLUDED"
 fi