diff --git a/.travis.yml b/.travis.yml
index f89aabe267..a906a91836 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -96,6 +96,7 @@ script:
     -DOPENSSL_ROOT_DIR=/usr/local/opt/openssl $PY2_CMAKE_ARGS ..
   else
     cmake -DHAVE_GTK2=NO -DBUILD_METALIBS=$BUILD_METALIBS \
+    -DWANT_PYTHON_VERSION=$(python -V 2>&1 | cut -d' ' -f2) \
     -DCOMPOSITE_SOURCE_EXCLUSIONS="$COMPOSITE_SOURCE_EXCLUSIONS" \
     -DCOMPOSITE_SOURCE_LIMIT=$COMPOSITE_SOURCE_LIMIT ..
   fi