diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -107,3 +107,7 @@
 * Added internal modules.
 * Updated copyright in all modules.
 * Updated LICENSE with updated year.
+
+# 0.10.0.1 -- 2024-07-15
+
+* Added missing documentation for BAM_V1_6_BAM_Alignment_OptionalFields(..).
diff --git a/hs-samtools.cabal b/hs-samtools.cabal
--- a/hs-samtools.cabal
+++ b/hs-samtools.cabal
@@ -17,10 +17,10 @@
 -- See the Haskell package versioning policy (PVP) for standards
 -- guiding when and how versions should be incremented.
 -- https://pvp.haskell.org
--- PVP summary:     +-+------- breaking API changes
---                  | | +----- non-breaking API additions
---                  | | | +--- code changes with no API change
-version:            0.10.0.0
+-- PVP summary:     +-+-------- breaking API changes
+--                  | |  +----- non-breaking API additions
+--                  | |  | +--- code changes with no API change
+version:            0.10.0.1
 
 -- A short (one-line) description of the package.
 synopsis: Read and write SAM, BAM, and CRAM files.
diff --git a/src/Data/BAM/Version1_6/BAM/Alignment/OptionalFields/Base.hs b/src/Data/BAM/Version1_6/BAM/Alignment/OptionalFields/Base.hs
--- a/src/Data/BAM/Version1_6/BAM/Alignment/OptionalFields/Base.hs
+++ b/src/Data/BAM/Version1_6/BAM/Alignment/OptionalFields/Base.hs
@@ -45,17 +45,17 @@
 data BAM_V1_6_BAM_Alignment_OptionalFields = BAM_V1_6_BAM_Alignment_OptionalFields
   { bam_v1_6_bam_alignment_optionalfields_aopt        :: Maybe BAM_V1_6_BAM_Alignment_OptionalFields_AOPT      -- ^ A - [!-~] -
                                                                                                                -- Printable character.
-  , bam_v1_6_bam_alignment_optionalfields_smallcopt   :: Maybe BAM_V1_6_BAM_Alignment_OptionalFields_SmallCOPT -- c - [0-9]+ -
+  , bam_v1_6_bam_alignment_optionalfields_smallcopt   :: Maybe BAM_V1_6_BAM_Alignment_OptionalFields_SmallCOPT -- ^ c - [0-9]+ -
                                                                                                                -- Int8 (signed).
-  , bam_v1_6_bam_alignment_optionalfields_bigcopt     :: Maybe BAM_V1_6_BAM_Alignment_OptionalFields_BigCOPT   -- C - [0-9]+ -
+  , bam_v1_6_bam_alignment_optionalfields_bigcopt     :: Maybe BAM_V1_6_BAM_Alignment_OptionalFields_BigCOPT   -- ^ C - [0-9]+ -
                                                                                                                -- Word8 (unsigned).
-  , bam_v1_6_bam_alignment_optionalfields_smalliopt   :: Maybe BAM_V1_6_BAM_Alignment_OptionalFields_SmallIOPT -- i - [0-9]+ -
+  , bam_v1_6_bam_alignment_optionalfields_smalliopt   :: Maybe BAM_V1_6_BAM_Alignment_OptionalFields_SmallIOPT -- ^ i - [0-9]+ -
                                                                                                                -- Int32 (signed).
-  , bam_v1_6_bam_alignment_optionalfields_bigiopt     :: Maybe BAM_V1_6_BAM_Alignment_OptionalFields_BigIOPT   -- I - [0-9]+ -
+  , bam_v1_6_bam_alignment_optionalfields_bigiopt     :: Maybe BAM_V1_6_BAM_Alignment_OptionalFields_BigIOPT   -- ^ I - [0-9]+ -
                                                                                                                -- Word32 (unsigned).
-  , bam_v1_6_bam_alignment_optionalfields_smallsopt   :: Maybe BAM_V1_6_BAM_Alignment_OptionalFields_SmallSOPT -- s - [0-9]+ -
+  , bam_v1_6_bam_alignment_optionalfields_smallsopt   :: Maybe BAM_V1_6_BAM_Alignment_OptionalFields_SmallSOPT -- ^ s - [0-9]+ -
                                                                                                                -- Int16 (signed).
-  , bam_v1_6_bam_alignment_optionalfields_bigsopt     :: Maybe BAM_V1_6_BAM_Alignment_OptionalFields_BigSOPT   -- S - [0-9]+ -
+  , bam_v1_6_bam_alignment_optionalfields_bigsopt     :: Maybe BAM_V1_6_BAM_Alignment_OptionalFields_BigSOPT   -- ^ S - [0-9]+ -
                                                                                                                -- Word16 (unsigned).
   , bam_v1_6_bam_alignment_optionalfields_fopt        :: Maybe BAM_V1_6_BAM_Alignment_OptionalFields_FOPT      -- ^ f - [-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)? -
                                                                                                                -- Single-precision floating number.