diff --git a/scripts/generate-launcher.sh b/scripts/generate-launcher.sh
index bb607e718..2021aee13 100755
--- a/scripts/generate-launcher.sh
+++ b/scripts/generate-launcher.sh
@@ -6,7 +6,7 @@ CACHE_VERSION=v1
 SBTPACK_LAUNCHER="$(dirname "$0")/../cli/target/pack/bin/coursier"
 
 if [ ! -f "$SBTPACK_LAUNCHER" ]; then
-  sbt cli/pack
+  sbt ++2.11.8 cli/pack
 fi
 
 "$SBTPACK_LAUNCHER" bootstrap \
diff --git a/scripts/generate-standalone-launcher.sh b/scripts/generate-standalone-launcher.sh
index 594adc9d8..9886ed8f9 100755
--- a/scripts/generate-standalone-launcher.sh
+++ b/scripts/generate-standalone-launcher.sh
@@ -5,7 +5,7 @@ cd "$(dirname "$0")/.."
 
 if [ ! -e cli/target/scala-2.11/proguard/coursier-standalone.jar ]; then
   echo "Generating proguarded JAR..." 1>&2
-  sbt cli/proguard:proguard
+  sbt ++2.11.8 cli/proguard:proguard
 fi
 
 cat > coursier-standalone << EOF