diff --git a/Gemfile.lock b/Gemfile.lock
index d9f9dca..c8e0946 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -5,15 +5,14 @@ PATH
       bigdecimal
       fontisan
       lutaml-model (~> 0.8.18)
-      pdfrb (>= 0.15.0)
+      pdfrb
       rubyzip
       thor
 
 PATH
   remote: /Users/mulgogi/src/claricle/pdfrb
   specs:
-    pdfrb (0.19.0)
-      lutaml-model (>= 0.7.0)
+    pdfrb (0.4.0)
       thor
 
 GEM
@@ -42,7 +41,6 @@ GEM
     ffi (1.17.4-arm-linux-gnu)
     ffi (1.17.4-arm-linux-musl)
     ffi (1.17.4-arm64-darwin)
-    ffi (1.17.4-x64-mingw-ucrt)
     ffi (1.17.4-x86_64-darwin)
     ffi (1.17.4-x86_64-linux-gnu)
     ffi (1.17.4-x86_64-linux-musl)
@@ -83,8 +81,6 @@ GEM
       racc (~> 1.4)
     nokogiri (1.19.4-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.19.4-x64-mingw-ucrt)
-      racc (~> 1.4)
     nokogiri (1.19.4-x86_64-darwin)
       racc (~> 1.4)
     nokogiri (1.19.4-x86_64-linux-gnu)
@@ -165,7 +161,6 @@ PLATFORMS
   arm-linux-gnu
   arm-linux-musl
   arm64-darwin
-  x64-mingw-ucrt
   x86_64-darwin
   x86_64-linux-gnu
   x86_64-linux-musl
@@ -199,7 +194,6 @@ CHECKSUMS
   ffi (1.17.4-arm-linux-gnu) sha256=d6dbddf7cb77bf955411af5f187a65b8cd378cb003c15c05697f5feee1cb1564
   ffi (1.17.4-arm-linux-musl) sha256=9d4838ded0465bef6e2426935f6bcc93134b6616785a84ffd2a3d82bc3cf6f95
   ffi (1.17.4-arm64-darwin) sha256=19071aaf1419251b0a46852abf960e77330a3b334d13a4ab51d58b31a937001b
-  ffi (1.17.4-x64-mingw-ucrt) sha256=f6ff9618cfccc494138bddade27aa06c74c6c7bc367a1ea1103d80c2fcb9ed35
   ffi (1.17.4-x86_64-darwin) sha256=aa70390523cf3235096cf64962b709b4cfbd5c082a2cb2ae714eb0fe2ccda496
   ffi (1.17.4-x86_64-linux-gnu) sha256=9d3db14c2eae074b382fa9c083fe95aec6e0a1451da249eab096c34002bc752d
   ffi (1.17.4-x86_64-linux-musl) sha256=3fdf9888483de005f8ef8d1cf2d3b20d86626af206cbf780f6a6a12439a9c49e
@@ -218,7 +212,6 @@ CHECKSUMS
   nokogiri (1.19.4-arm-linux-gnu) sha256=a301313e38bb065d68239e79734bcd6f56fb6efaacebde29e9abf2a4735340ca
   nokogiri (1.19.4-arm-linux-musl) sha256=588923c101bcfa78869734d247d25b598674323e7f22474fc468f6e5647311eb
   nokogiri (1.19.4-arm64-darwin) sha256=a46db9853286e6597b36ebc6953817d15acf3a299583eb3f89fdc6f91dd63527
-  nokogiri (1.19.4-x64-mingw-ucrt) sha256=051da97b8eccfdb5444fed40246a35e10d7298b9efe759b4cd25455ea04c587e
   nokogiri (1.19.4-x86_64-darwin) sha256=7fd17057d3e1f00e9954a74b3cd76595d3d4a5ef233b7ed9599047c204f70551
   nokogiri (1.19.4-x86_64-linux-gnu) sha256=379fae440b28915e3f19d752ce2dcf8465ed2b2fbefd2a7ca0dd497bc981a06a
   nokogiri (1.19.4-x86_64-linux-musl) sha256=17dfb7c1fa194ae02fbf7c51a7afc8d278045ab3fdacfd86f91d02d7b274470b
@@ -226,7 +219,7 @@ CHECKSUMS
   paint (2.3.0) sha256=327d623e4038619d5bd99ae5db07973859cd78400c7f0329eea283cef8e83be5
   parallel (2.1.0) sha256=b35258865c2e31134c5ecb708beaaf6772adf9d5efae28e93e99260877b09356
   parser (3.3.12.0) sha256=21a6d7f755d5a24dfbdc6e6b772e4e879a52e7631a88bc5a3a134606052c9828
-  pdfrb (0.19.0)
+  pdfrb (0.4.0)
   prism (1.9.0) sha256=7b530c6a9f92c24300014919c9dcbc055bf4cdf51ec30aed099b06cd6674ef85
   racc (1.8.1) sha256=4a7f6929691dbec8b5209a0b373bc2614882b55fc5d2e447a21aaa691303d62f
   rainbow (3.1.1) sha256=039491aa3a89f42efa1d6dec2fc4e62ede96eb6acd95e52f1ad581182b79bc6a
diff --git a/idml.gemspec b/idml.gemspec
index b67080a..3d7216d 100644
--- a/idml.gemspec
+++ b/idml.gemspec
@@ -31,7 +31,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "bigdecimal"
   spec.add_dependency "fontisan"
   spec.add_dependency "lutaml-model", "~> 0.8.18"
-  spec.add_dependency "pdfrb", ">= 0.15.0"
+  spec.add_dependency "pdfrb"
   spec.add_dependency "rubyzip"
   spec.add_dependency "thor"