diff --git a/yesod-bin/hsfiles/mongo.hsfiles b/yesod-bin/hsfiles/mongo.hsfiles
index 65a997ee..6fce7882 100644
--- a/yesod-bin/hsfiles/mongo.hsfiles
+++ b/yesod-bin/hsfiles/mongo.hsfiles
@@ -436,6 +436,10 @@ library
                  , fast-logger                   >= 2.2        && < 2.3
                  , wai-logger                    >= 2.2        && < 2.3
 
+    -- see https://github.com/yesodweb/yesod/issues/814
+    if !os(windows)
+        build-depends: unix
+
 executable         PROJECTNAME
     if flag(library-only)
         Buildable: False
diff --git a/yesod-bin/hsfiles/mysql.hsfiles b/yesod-bin/hsfiles/mysql.hsfiles
index 6616cb4b..d02bfadb 100644
--- a/yesod-bin/hsfiles/mysql.hsfiles
+++ b/yesod-bin/hsfiles/mysql.hsfiles
@@ -440,6 +440,10 @@ library
                  , fast-logger                   >= 2.2        && < 2.3
                  , wai-logger                    >= 2.2        && < 2.3
 
+    -- see https://github.com/yesodweb/yesod/issues/814
+    if !os(windows)
+        build-depends: unix
+
 executable         PROJECTNAME
     if flag(library-only)
         Buildable: False
diff --git a/yesod-bin/hsfiles/postgres-fay.hsfiles b/yesod-bin/hsfiles/postgres-fay.hsfiles
index 7ac52a23..a8920c3b 100644
--- a/yesod-bin/hsfiles/postgres-fay.hsfiles
+++ b/yesod-bin/hsfiles/postgres-fay.hsfiles
@@ -477,6 +477,10 @@ library
                  , fast-logger                   >= 2.2        && < 2.3
                  , wai-logger                    >= 2.2        && < 2.3
 
+    -- see https://github.com/yesodweb/yesod/issues/814
+    if !os(windows)
+        build-depends: unix
+
 executable         PROJECTNAME
     if flag(library-only)
         Buildable: False
diff --git a/yesod-bin/hsfiles/postgres.hsfiles b/yesod-bin/hsfiles/postgres.hsfiles
index f9f65603..bb8e1346 100644
--- a/yesod-bin/hsfiles/postgres.hsfiles
+++ b/yesod-bin/hsfiles/postgres.hsfiles
@@ -440,6 +440,10 @@ library
                  , fast-logger                   >= 2.2        && < 2.3
                  , wai-logger                    >= 2.2        && < 2.3
 
+    -- see https://github.com/yesodweb/yesod/issues/814
+    if !os(windows)
+        build-depends: unix
+
 executable         PROJECTNAME
     if flag(library-only)
         Buildable: False
diff --git a/yesod-bin/hsfiles/simple.hsfiles b/yesod-bin/hsfiles/simple.hsfiles
index 4124f8fe..449a2e4f 100644
--- a/yesod-bin/hsfiles/simple.hsfiles
+++ b/yesod-bin/hsfiles/simple.hsfiles
@@ -364,6 +364,10 @@ library
                  , fast-logger                   >= 2.2        && < 2.3
                  , wai-logger                    >= 2.2        && < 2.3
 
+    -- see https://github.com/yesodweb/yesod/issues/814
+    if !os(windows)
+        build-depends: unix
+
 executable         PROJECTNAME
     if flag(library-only)
         Buildable: False
diff --git a/yesod-bin/hsfiles/sqlite.hsfiles b/yesod-bin/hsfiles/sqlite.hsfiles
index e379455e..bd288dd8 100644
--- a/yesod-bin/hsfiles/sqlite.hsfiles
+++ b/yesod-bin/hsfiles/sqlite.hsfiles
@@ -440,6 +440,10 @@ library
                  , fast-logger                   >= 2.2        && < 2.3
                  , wai-logger                    >= 2.2        && < 2.3
 
+    -- see https://github.com/yesodweb/yesod/issues/814
+    if !os(windows)
+        build-depends: unix
+
 executable         PROJECTNAME
     if flag(library-only)
         Buildable: False