diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,3 +1,8 @@
+1.1.2
+------------
+* Strip leading slash from target paths in relations as the ECMA-376 spec requires
+  (thanks to Luke Clifton <lukec@themk.net>)
+
 1.1.1
 ------------
 * dropped support for GHC 8.8.* and 8.10.* and added support for GHC 9.4.* and 9.6.*
diff --git a/src/Codec/Xlsx/Parser.hs b/src/Codec/Xlsx/Parser.hs
--- a/src/Codec/Xlsx/Parser.hs
+++ b/src/Codec/Xlsx/Parser.hs
@@ -700,9 +700,20 @@
     c <- xmlCursorOptional ar relsPath
     return $ maybe Relationships.empty (setTargetsFrom fp . headNote "Missing rels" . fromCursor) c
 
+-- According to part 2, section 7.3.4 of ECMA-376, when mapping logical item
+-- names to ZIP item names we need to remove the leading slash.
+--
+-- Non-ASCII characters should be percent-encoded as well, but this is not
+-- currently implemented.
+--
+-- https://ecma-international.org/publications-and-standards/standards/ecma-376/
+logicalNameToZipItemName :: FilePath -> FilePath
+logicalNameToZipItemName ('/' : name) = name
+logicalNameToZipItemName name = name
+
 lookupRelPath :: FilePath
               -> Relationships
               -> RefId
               -> Either ParseError FilePath
 lookupRelPath fp rels rId =
-  relTarget <$> note (InvalidRef fp rId) (Relationships.lookup rId rels)
+  logicalNameToZipItemName . relTarget <$> note (InvalidRef fp rId) (Relationships.lookup rId rels)
diff --git a/src/Codec/Xlsx/Types/Internal/SharedStringTable.hs b/src/Codec/Xlsx/Types/Internal/SharedStringTable.hs
--- a/src/Codec/Xlsx/Types/Internal/SharedStringTable.hs
+++ b/src/Codec/Xlsx/Types/Internal/SharedStringTable.hs
@@ -37,7 +37,7 @@
 -- reading and writing the repetitive information once.
 --
 -- Relevant parts of the EMCA standard (2nd edition, part 1,
--- <http://www.ecma-international.org/publications/standards/Ecma-376.htm>),
+-- <https://ecma-international.org/publications-and-standards/standards/ecma-376/>),
 -- page numbers refer to the page in the PDF rather than the page number as
 -- printed on the page):
 --
diff --git a/src/Codec/Xlsx/Types/StyleSheet.hs b/src/Codec/Xlsx/Types/StyleSheet.hs
--- a/src/Codec/Xlsx/Types/StyleSheet.hs
+++ b/src/Codec/Xlsx/Types/StyleSheet.hs
@@ -157,7 +157,7 @@
 -- | StyleSheet for an XML document
 --
 -- Relevant parts of the EMCA standard (4th edition, part 1,
--- <http://www.ecma-international.org/publications/standards/Ecma-376.htm>),
+-- <https://ecma-international.org/publications-and-standards/standards/ecma-376/>),
 -- page numbers refer to the page in the PDF rather than the page number as
 -- printed on the page):
 --
diff --git a/xlsx.cabal b/xlsx.cabal
--- a/xlsx.cabal
+++ b/xlsx.cabal
@@ -1,6 +1,6 @@
 Name:                xlsx
 
-Version:             1.1.1
+Version:             1.1.2
 
 Synopsis:            Simple and incomplete Excel file parser/writer
 Description:
@@ -10,7 +10,7 @@
     For examples look into "Codec.Xlsx".
     .
     Format is covered by ECMA-376 standard:
-    <http://www.ecma-international.org/publications/standards/Ecma-376.htm>
+    <https://ecma-international.org/publications-and-standards/standards/ecma-376/>
     .
     4th edition of the standard with the transitional schema is used for this library.
 Extra-source-files: