diff --git a/conda-recipes/main-library/build.sh b/conda-recipes/main-library/build.sh
index 730271b6e..229067c3b 100755
--- a/conda-recipes/main-library/build.sh
+++ b/conda-recipes/main-library/build.sh
@@ -18,7 +18,7 @@ cmake .. -G Ninja \
       -DSLS_USE_TESTS=ON \
       -DSLS_USE_PYTHON=OFF \
       -DCMAKE_BUILD_TYPE=Release \
-      -DSLS_USE_HDF5=OFF\
+      -DSLS_USE_HDF5=OFF \
      
 NCORES=$(getconf _NPROCESSORS_ONLN)
 echo "Building using: ${NCORES} cores"
diff --git a/conda-recipes/main-library/meta.yaml b/conda-recipes/main-library/meta.yaml
index cdbe70405..87a9a4f50 100755
--- a/conda-recipes/main-library/meta.yaml
+++ b/conda-recipes/main-library/meta.yaml
@@ -27,6 +27,7 @@ requirements:
     - libgcc-ng
     - libgl-devel  # [linux]
     - libtiff
+    - zlib
 
   run:
     - libstdcxx-ng