diff --git a/coin/provisioning/common/macos/libiodbc.sh b/coin/provisioning/common/macos/libiodbc.sh
index 62872b63..d52bc974 100755
--- a/coin/provisioning/common/macos/libiodbc.sh
+++ b/coin/provisioning/common/macos/libiodbc.sh
@@ -46,7 +46,7 @@ set -ex
 # shellcheck source=../unix/SetEnvVar.sh
 source "${BASH_SOURCE%/*}/../unix/SetEnvVar.sh"
 
-brew install ${BASH_SOURCE%/*}/libiodbc.rb $*
+brew install --formula ${BASH_SOURCE%/*}/libiodbc.rb $*
 
 # CPLUS_INCLUDE_PATH is set so clang and configure can find libiodbc
 
diff --git a/coin/provisioning/qtci-macos-11.0-arm/25-python3.sh b/coin/provisioning/qtci-macos-11.0-arm/25-python3.sh
index edc87175..ceeeae1e 100755
--- a/coin/provisioning/qtci-macos-11.0-arm/25-python3.sh
+++ b/coin/provisioning/qtci-macos-11.0-arm/25-python3.sh
@@ -45,7 +45,7 @@
 # shellcheck source=../unix/SetEnvVar.sh
 source "${BASH_SOURCE%/*}/../common/unix/SetEnvVar.sh"
 
-brew install ${BASH_SOURCE%/*}/pyenv.rb
+brew install --formula ${BASH_SOURCE%/*}/pyenv.rb
 
 pyenv install 3.9.7
 
diff --git a/coin/provisioning/qtci-macos-12.0-arm/25-python.sh b/coin/provisioning/qtci-macos-12.0-arm/25-python.sh
index f21f3c5e..b9f5c7a8 100755
--- a/coin/provisioning/qtci-macos-12.0-arm/25-python.sh
+++ b/coin/provisioning/qtci-macos-12.0-arm/25-python.sh
@@ -45,7 +45,7 @@
 # shellcheck source=../unix/SetEnvVar.sh
 source "${BASH_SOURCE%/*}/../common/unix/SetEnvVar.sh"
 
-brew install ${BASH_SOURCE%/*}/pyenv.rb
+brew install --formula ${BASH_SOURCE%/*}/pyenv.rb
 
 pyenv install 3.9.7