diff --git a/src/build.sh b/src/build.sh
index 55db8a481f..073018be03 100755
--- a/src/build.sh
+++ b/src/build.sh
@@ -99,9 +99,9 @@ fi
 rm -rf "./$out"
 mkdir -p out
 
-python2=$(which python2 2>/dev/null || which python 2>/dev/null)
+python=$(which python2 2>/dev/null || which python 2>/dev/null || which python3 2>/dev/null)
 export DEPOT_TOOLS_WIN_TOOLCHAIN=0
 
-./gn/out/gn gen "$out" --args="$flags $EXTRA_FLAGS" --script-executable=$python2
+./gn/out/gn gen "$out" --args="$flags $EXTRA_FLAGS" --script-executable=$python
 
 ninja -C "$out" naive
diff --git a/src/get-clang.sh b/src/get-clang.sh
index f3d6321063..3a518fd132 100755
--- a/src/get-clang.sh
+++ b/src/get-clang.sh
@@ -26,8 +26,8 @@ if [ "$ARCH" = Linux ]; then
 fi
 
 # Clang
-python2=$(which python2 2>/dev/null || which python 2>/dev/null)
-CLANG_REVISION=$($python2 tools/clang/scripts/update.py --print-revision)
+python=$(which python2 2>/dev/null || which python 2>/dev/null || which python3 2>/dev/null)
+CLANG_REVISION=$($python tools/clang/scripts/update.py --print-revision)
 CLANG_PATH="clang-$CLANG_REVISION.tgz"
 case "$ARCH" in
   Linux) clang_url="https://commondatastorage.googleapis.com/chromium-browser-clang/Linux_x64/$CLANG_PATH";;