diff --git a/package/archlinux/PKGBUILD b/package/archlinux/PKGBUILD
index 8e155d4..541d969 100644
--- a/package/archlinux/PKGBUILD
+++ b/package/archlinux/PKGBUILD
@@ -33,6 +33,7 @@ build() {
         -DCMAKE_CXX_FLAGS_RELWITHDEBINFO="-O2 -g -DNDEBUG -fno-omit-frame-pointer" \
         -DCMAKE_INSTALL_PREFIX=/usr \
         -DCMAKE_COLOR_DIAGNOSTICS=ON \
+        -DPYTHON_EXECUTABLE=$(which python) \
         -DMAGNUM_WITH_PYTHON=ON \
         -DMAGNUM_BUILD_TESTS=ON \
         -G "Ninja Multi-Config"
diff --git a/package/archlinux/PKGBUILD-coverage b/package/archlinux/PKGBUILD-coverage
index 6d81678..64e72b6 100644
--- a/package/archlinux/PKGBUILD-coverage
+++ b/package/archlinux/PKGBUILD-coverage
@@ -30,6 +30,7 @@ build() {
         -DCMAKE_BUILD_TYPE=Debug \
         -DCMAKE_INSTALL_PREFIX=/usr \
         -DCMAKE_COLOR_DIAGNOSTICS=ON \
+        -DPYTHON_EXECUTABLE=$(which python) \
         -DMAGNUM_WITH_PYTHON=ON \
         -DMAGNUM_BUILD_TESTS=ON \
         -G Ninja