diff --git a/src/sam/header.jl b/src/sam/header.jl
index 1369e37..668cb59 100644
--- a/src/sam/header.jl
+++ b/src/sam/header.jl
@@ -14,6 +14,10 @@ function Header()
     return Header(MetaInfo[])
 end
 
+function Base.:(==)(a::Header, b::Header)
+    return a.metainfo == b.metainfo
+end
+
 function Base.copy(header::Header)
     return Header(header.metainfo)
 end
diff --git a/src/sam/metainfo.jl b/src/sam/metainfo.jl
index f40e6ae..f99c952 100644
--- a/src/sam/metainfo.jl
+++ b/src/sam/metainfo.jl
@@ -12,6 +12,15 @@ mutable struct MetaInfo
     dictval::Vector{UnitRange{Int}}
 end
 
+function Base.:(==)(a::MetaInfo, b::MetaInfo)
+    return a.data == b.data &&
+        a.filled  == b.filled &&
+        a.tag     == b.tag &&
+        a.val     == b.val &&
+        a.dictkey == b.dictkey &&
+        a.dictval == b.dictval
+end
+
 function MetaInfo(data::Vector{UInt8}=UInt8[])
     metainfo = MetaInfo(data, 1:0, 1:0, 1:0, UnitRange{Int}[], UnitRange{Int}[])
     if !isempty(data)