diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index ab10b8d..9b92f0e 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -102,7 +102,7 @@ jobs:
         Invoke-WebRequest -OutFile 3.3.7.tar.gz https://github.com/eigenteam/eigen-git-mirror/archive/3.3.7.tar.gz
         tar -zxvf 3.3.7.tar.gz
         mv eigen-git-mirror-3.3.7 include
-        Invoke-WebRequest -OutFile 3.3.7.tar.gz https://github.com/bab2min/EigenRand/archive/v0.2.1.tar.gz
+        Invoke-WebRequest -OutFile v0.2.1.tar.gz https://github.com/bab2min/EigenRand/archive/v0.2.1.tar.gz
         tar -zxvf v0.2.1.tar.gz
         mv EigenRand-0.2.1/EigenRand include/
     - name: Deploy
diff --git a/.github/workflows/deploy_test.yml b/.github/workflows/deploy_test.yml
index 922ef1d..0b89a6d 100644
--- a/.github/workflows/deploy_test.yml
+++ b/.github/workflows/deploy_test.yml
@@ -101,7 +101,7 @@ jobs:
         Invoke-WebRequest -OutFile 3.3.7.tar.gz https://github.com/eigenteam/eigen-git-mirror/archive/3.3.7.tar.gz
         tar -zxvf 3.3.7.tar.gz
         mv eigen-git-mirror-3.3.7 include
-        Invoke-WebRequest -OutFile 3.3.7.tar.gz https://github.com/bab2min/EigenRand/archive/v0.2.1.tar.gz
+        Invoke-WebRequest -OutFile v0.2.1.tar.gz https://github.com/bab2min/EigenRand/archive/v0.2.1.tar.gz
         tar -zxvf v0.2.1.tar.gz
         mv EigenRand-0.2.1/EigenRand include/
     - name: Deploy
diff --git a/.github/workflows/pull_request_test.yml b/.github/workflows/pull_request_test.yml
index 310d39d..c13e5ae 100644
--- a/.github/workflows/pull_request_test.yml
+++ b/.github/workflows/pull_request_test.yml
@@ -99,7 +99,7 @@ jobs:
         Invoke-WebRequest -OutFile 3.3.7.tar.gz https://github.com/eigenteam/eigen-git-mirror/archive/3.3.7.tar.gz
         tar -zxvf 3.3.7.tar.gz
         mv eigen-git-mirror-3.3.7 include
-        Invoke-WebRequest -OutFile 3.3.7.tar.gz https://github.com/bab2min/EigenRand/archive/v0.2.1.tar.gz
+        Invoke-WebRequest -OutFile v0.2.1.tar.gz https://github.com/bab2min/EigenRand/archive/v0.2.1.tar.gz
         tar -zxvf v0.2.1.tar.gz
         mv EigenRand-0.2.1/EigenRand include/
     - name: Build
diff --git a/src/TopicModel/DT.h b/src/TopicModel/DT.h
index 8996178..162a003 100644
--- a/src/TopicModel/DT.h
+++ b/src/TopicModel/DT.h
@@ -45,7 +45,7 @@ namespace tomoto
 			size_t timepoint) const = 0;
 
 		virtual size_t getT() const = 0;
-		virtual std::vector<size_t> getNumDocsByT() const = 0;
+		virtual std::vector<uint32_t> getNumDocsByT() const = 0;
 
 		virtual Float getAlphaVar() const = 0;
 		virtual Float getEtaVar() const = 0;
diff --git a/src/TopicModel/DTModel.hpp b/src/TopicModel/DTModel.hpp
index 7eeacd2..a7a6df6 100644
--- a/src/TopicModel/DTModel.hpp
+++ b/src/TopicModel/DTModel.hpp
@@ -48,7 +48,7 @@ namespace tomoto
 
 		Eigen::Matrix<Float, -1, -1> alphas; // Dim: (Topic, Time)
 		Eigen::Matrix<Float, -1, -1> etaByDoc; // Dim: (Topic, Docs) : Topic distribution by docs(and time)
-		std::vector<size_t> numDocsByTime; // Dim: (Time)
+		std::vector<uint32_t> numDocsByTime; // Dim: (Time)
 		Eigen::Matrix<Float, -1, -1> phi; // Dim: (Word, Topic * Time)
 		std::vector<sample::AliasMethod<>> wordAliasTables; // Dim: (Word * Time)
 
@@ -495,7 +495,7 @@ namespace tomoto
 			T, shapeA, shapeB, shapeC, alphaVar, etaVar, phiVar, alphas, etaByDoc, phi);
 
 		GETTER(T, size_t, T);
-		GETTER(NumDocsByT, std::vector<size_t>, numDocsByTime);
+		GETTER(NumDocsByT, std::vector<uint32_t>, numDocsByTime);
 		GETTER(AlphaVar, Float, alphaVar);
 		GETTER(EtaVar, Float, etaVar);
 		GETTER(PhiVar, Float, phiVar);