diff --git a/packages/ambertools/package.py b/packages/ambertools/package.py
index 87e4c39e822c3df1fa37fa081b43dfdf3e0d5f62..e4aa91175d1037fcd986cd5967ad3eeb038a27a5 100644
--- a/packages/ambertools/package.py
+++ b/packages/ambertools/package.py
@@ -19,7 +19,7 @@ class Ambertools (CMakePackage):
     depends_on("flex",                      type="build") # This is necessary for sure (experimentally tested)
     depends_on("bison",                     type="build") # This is necessary for sure (experimentally tested)
     depends_on("tcsh",                      type="build")
-    depends_on("zlib",                      type=("build", "run"))
+    depends_on("zlib",                      type=("build", "link", "run"))
     depends_on("bzip2",                     type=("build", "run"))
     depends_on("blas",                      type=("build", "run"))
     depends_on("lapack",                    type=("build", "run"))